Miles Cook
November 29, 2005

During a recent staff meeting, we were tossing around story ideas and came up this: What if someone had a '65 or '66 Mustang and wanted to convert the car to a Deluxe Interior? What parts would it take to do it? What bits make an authentic "Pony" Interior, as it is affectionately known?

We're going to answer those questions and more. People have been converting standard '65-'66 Mustang interiors to Pony cabins for years, and for good reason--they're desirable and look spectacular, especially in the bright colors that some cars came with.

On the one-year anniversary of the Mustang's introduction on April 17, 1965, the Pony Interior joined the GT package and bench-seat options as new available selections. Ever since, the Pony interior has been a hit in original guise and for those upgrading cars that didn't originally come with one.

We'll show you what a correct Pony Interior is comprised of and what's needed to upgrade an existing car with components available from vintage Mustang parts houses such as Mustang Country International. We frown upon trying to pass off a car as originally equipped with a Pony Interior, but believe there's nothing wrong with saying you've converted your car to a Pony Interior, creating a clone of sorts.

Finally, all available colors for Pony Interiors, along with other information about them, were presented in our April '03 issue.

Major Pony Interior Components

  • Five-dial instrument panel
  • Woodgrain inserts on gauge cluster and glovebox door
  • Uniquely styled glovebox door
  • Molded door panels with Thunderbird-style, pistol-grip inside door-release handles
  • Door-mounted courtesy lights
  • Kick panels with carpeting on lower half and stainless trim strip
  • Running horse-embossed bolstered seat upholstery
  • Woodgrain Deluxe steering wheel
  • Vinyl-covered quarter-trim panels (coupe only)
  • Bright trim cap on quarter-trim panel (coupe only)
  • Bright-trimmed pedals

We asked Mustang Country to make up a list of required parts to convert a car to a Pony Interior. Here's what they came up with. Note the extra components needed to convert a standard '65 interior in a non-GT '65 car.

Parts Required for Pony Interior Conversion
Item Price
Seat upholstery $225.00
Seat buns (2 @ 59) 118.00
Kick panel 24.95
Kick-panel chrome 29.95
Kick-panel carpet 15.95
Woodgrain gauge-cluster bezel 44.95
Woodgrain glovebox door 89.95
Quarter-trim upholstery (coupe only) 39.00
Chrome corner cap 14.95
Door panels 149.95
Door-panel trim 119.95
Door-panel clips (30 @ .25) 7.50
Handcup mounting brackets 7.90
Door-panel cups 15.00
Door-panel-cup inserts 7.90
T-bird-type door handles (2 @ 20) 40.00
Door-handle escutcheons 9.95
Door-handle shaft and link assemblies (2 @ 15) 30.00
Door courtesy lamps (2 @ 30) 60.00
Wire looms for door lights 23.95
Screw kit 8.95
Deluxe steering wheel 349.00
Steering-wheel center cap 59.95
Stainless steel-trimmed accelerator pedal 10.95
Stainless steel brake-pedal trim (auto or manual) 7.95
Stainless-steel clutch-pedal trim 8.95
Total for all '66s or '65 GT: $1,511.60 to $1,520.55

Additional Parts Needed for '65 Standard
Item Price
Underdash wiring harness $395.00
Alternator wiring harness 23.95
Headlight wiring harness 114.95
Engine-gauge wiring harness 35.95
Oil sending unit 19.95
Oil sending-unit extension 24.95
Used five-dial gauge cluster 150.00
'66 glovebox latch 29.95
Total Additional $794.70
Total for Converting from '65 Standard Interior: $2,306.30 to $2,315.25

0511mump_07z 1966_Ford_Mustang_GT_Fastback Door_Panel_View_Courtesy_Lights
The door-mounted red-and-white courtesy lights are also part of the Deluxe Interior. Mounted on the far lower edge of the door, they're easily visible when the door is open. The holes for these lights need to be cut into existing doors when converting a car with a standard interior to a Pony Interior.
0511mump_08z 1966_Ford_Mustang_GT_Fastback Door_Handle_View_Close_Up
Along with the T-bird door handles, these chrome escutcheons are mounted behind the handles.
0511mump_09z 1966_Ford_Mustang_GT_Fastback Panel_Cups_View
A complete Pony Interior door panel also includes these panel cups that allow for a place to pull the door closed with your hand. A special metal bracket behind the door panel provides support.
0511mump_10z 1966_Ford_Mustang_GT_Fastback Interior_View_Steering_Wheel
The biggest ticket item for an authentic Pony Interior is this beautiful woodgrain steering wheel. Parts operations such as Mustang Country have these in stock. The center cap is sold separately.
0511mump_12z 1966_Ford_Mustang_GT_Fastback Interior_View_Glove_Box
Another visually prominent part of a Pony Interior is the woodgrain glovebox door, which is readily available from most any Mustang parts house.
0511mump_11z 1966_Ford_Mustang_GT_Fastback Interior_View_Gauge_Cluster
All Pony Interior cars in '65 and '66 came with the five-dial gauge cluster, even if the car was a '65 non-GT. All '66 Mustangs also came with these gauges, but the woodgrain bezel is unique to the Pony Interior package. If you're converting a '65 non-GT standard interior to Pony status, you'll need to swap the Falcon-style sweep speedometer gauge cluster to the five-dial type shown here, which also involves modifying the dash to make this version fit. Of all types of '65-'66 Mustangs, '65s with standard interiors are definitely the most involved (see sidebar). All '65 GTs have the five-dial cluster, whether or not they have Pony Interiors.
0511mump_13z 1966_Ford_Mustang_GT_Fastback Interior_View_Speakers
Missing from the Pony Interior of our '66 GT fastback subject car are the carpeted kick panels, which have been supplanted for the time being by these panels with speakers. Covered halfway with carpet and trimmed with a chrome strip, an example of these panels is visible in the photo of the convertible interior shown at the beginning of this article.
Unique to coupes and convertibles is the vinyl quarter-trim upholstery that's shown off the car. Used on the inside quarter-trim panels, it covered the whole panel behind the window crank. Although used in all convertibles, the panel was covered only in coupes with Pony Interiors. Fastbacks have a unique setup, so no quarter-trim upholstery was used.