Which Transmission to use?

Don’t just look at Chrysler products. The gm 200 and 700 r4 models can adapted and the floor surgery is minor. They are good transmissions and can be built to handle pretty good power. I have an 83 elcamino with a 383 and a 700r4 with 3:73 gears. Cruises at 75 mph at 2200 rpm.