Transmission for push-button Barracuda

Unless you are just REALLY wanting to use the pushbuttons, get a later model 904 for a V8 and use it. You could easily use an aftermarket shifter to make it work. Finding a cable shift 904 is harder than it used to be, plus...you need one with a valve body from an actual push button car instead of one with either a column shift or floor shift. The cables constantly leak, and if they don't because they have new seals on the cables, they soon will be in my experience. The main things you will need besides a transmission to get the 318 installed, is early A V8 motor mounts, early A V8 exhaust manifolds, and an early A V8 center link.