Bob Perkins
March 27, 2017

Boss Shocks

We are currently restoring a 1970 Boss 429. I need some information on correct rear shocks, such as the correct part numbers on the shocks and paint ID codes, if applicable. The car was built in November 1969.

Bob Wheeler
Lombard, Illinois

The correct engineering numbers for the Boss 429 shocks are C9ZX-18080-A. The shocks have one red and one orange paint daub on them.


Mach Coil Placement

What is the proper location of the ignition coil for a 351 Windsor engine installed in a 1969 Mustang Mach 1 without air conditioning?

Lynn (last name withheld)
Via the internet

The coil bracket is attached to the right hand cylinder head. I have included a picture for reference.


1969-1970 Bumper Isolators

It was brought to my attention recently that 1969-70 Mustangs had a rubber insulator on the two main bumper brackets. I have not seen these and don’t know what to look for, so can you provide some info on this subject?

Bill Kimsey
Decatur, Georgia

I have included a picture of the insulators and installation on the bumper arm. The front bumper stone deflector sits in the two insulators. Originally, the insulators were glued to the bumper arm. Today, it is a rare find to find the insulators intact but is a very nice detail for concours restoration.


Correct Engine Bay Finish

I’m restoring two 1969 Cobra Jet Mach 1s. One is a Metuchen car and the other is a San Jose car. What would be the correct paint for the engine compartment, including the inner fenders, firewall, and radiator support? I would appreciate your recommendations on the correct paint.

Alvin Wells
Via the internet

We use PPG’s DP90LF epoxy primer (black) as a primer coat for the areas you’re asking about. For top coating, we use PPG’s Duracryl DDL9423 Low Gloss Black. The 9423 is the best color and texture I’ve found to duplicate the factory paint appearance. The DDL9423 is a lacquer-based product that requires proper sub-surface prep for best results. Both products are readily available at your local PPG paint supplier.