For instance, let’s say that one of your first upgrades was new wheels and some better brakes. Later down the line, you decide you want to ditch your GM rear and move to a Ford 9-inch.

Though Project ’55 Revive has a Currie Crate 9-inch rearend, this CPP rear disc brake kit is also designed for use with the stock 1955-1970 GM 10/12-bolt rear.

All this is fascinating stuff, sure to drop jaws even among Mustang connoisseurs. Although the nitty-gritty details apply to Ford 9-inch rear axles from 1969-1970 Boss and Cobra Jet Mustangs, most ...

The Ford 9-inch axle is one of the most versatile drivetrain parts ever created. As an OEM component, the 9-inch was used in cars and trucks from 1957 all the way up to the 1986 model year.