G
Guest
·I have a 69 Mach 1 R code that currently has a non matching 390 engine insead of the original 428. I am thinking about a head upgrade and I cant decided between aftermarket aluminum or original cobra jet heads. The car is being restored with some non original parts(quarters) and I may not paint it the original color so with that in mind... Is it even worth the effort to find original cobra jet parts to one day make this a numbers matching car?