Bob Perkins
March 31, 2015

Boss Lug Nuts

I got a Boss 351, I finished my restoration. My only flaw now is I have a set of original Firestone Wide Oval F60x15 tires and an original set of small-center Magnum 500 wheels and I ordered lug nuts from Ford, PN C5ZZ-1012-B. What would be the correct lug nut for my Boss 351 Mustang?

Gordon Balu
Via the Internet

The correct lug nuts are Ford PN C4GY-1012-B. The C4GY-1012-A is longer than the C5ZZ-1012-B. NPD has a near exact reproduction of the C4GY-1012-A.


Concours Wipers

Have you got some original documentation of the length of ’69 wiper blades and also the manufacturer? Thanks!

Bob (last name withheld)
Via the Internet

The two suppliers were Anco and Trico. Depending on assembly plant and production dates there are typical patterns of brand used, but nothing I’ve seen documenting which brand was used at each assembly plant at specific dates in the model year. MCA guidelines accept both brands as concours correct, as long as they are original ’69 holders and refills. Shown here are the Trico at the left and Anco on the right.


Magnum Wheel Identification

Can someone clear up for me the difference in the ’69 Magnum 500 wheels and the ’70 Magnum wheels, particularly as used on the Boss cars? Were they the same? Were the center caps the same? Did the ’69 Magnum wheel carry over to the ’70 model?

Larry Latrop
San Jose, CA

The Ford part number for the ’69 and ’70 chrome Magnum 500 is C9ZZ-1007-D. The Ford part number for the ’69 Boss 302 Argent Magnum 500 is C9ZZ-1007-E. The Ford part number for the center caps is C9ZZ-1130-E. The ID (paint code) code on the back of the C9ZZ-1007-D is two white daubs. The ID code on the argent wheel is one yellow Markal Paintstik-type slash. The center cap opening is 17⁄8 inch on these wheels (small hole).

The ’69 Boss 429 Magnum is Ford PN C9ZZ-1007-H. The C9ZZ-1007-H wheel uses the C9ZZ-1130-F center cap. This is the only Boss Magnum with highly polished chrome center. This wheel also uses flat black rather than semigloss black for the blackout. The paint code on the back is Orange, usually sprayed rather than a daub. The center cap opening is 21⁄8 inch (large hole), same as the D10Z-1007-A Magnums for ’71 model year after 4/2/71. The paint code on back of a D10Z -1007-A wheel is two orange daubs. The Ford part number for the D10Z 1007-A wheel Center cap is D1ZZ-1130-G.


Shock Details

I am restoring, what I think, is a set of original shocks for my San Jose–built June ’65 GT fastback. Could you tell me what the correct paint daubs or markings should be? I have painted them semigloss black, a little more on the glossy side. I also have correct hardware from the other set of Ford N.O.S. shocks to complete them.

Peter (last name withheld)
Pine Bluffs, WY

The paint daub for ’65 Mustang original shocks would be light green. Enclosed is a picture of two original shocks. You’re correct; the shocks are painted semigloss black.


Let us Hear From You. Send your restoration questions to: Resto Roundup, c/o Bob Perkins, Perkins Restoration, North 2123 Hwy. 16 & 26, Juneau, WI 53039. Send email to mustang.monthly@sorc.com.