4 speed identification

The crank in the picture appears to have the brass pilot bushing, so you should be good to go. A high performance 273 will have the 9.5 clutch slipping in high gear within months under full power. I do not drag race. I've had friends that did and it is too specialized for me. I want power and handling. So, shall we say spirited acceleration with full power shifts.

The Original Hurst shifter is a better piece. and the thifter hump looks correct to me for an early "A" body. They had that funny little cross over and the round shifter boot pattern, except for 66. The Shumacher mounts are just copies of the originals.

Good luck, Sounds like a nice project. I've done similar ones myself.