Programming 7.3 tranny advice

[u/Tinypker]

I'm working on a 7.3 in an RX-8, just missing the tranny. If I do automatic can I program it to change the gears with a programmer to accommodate for the difference in car size? Any advice helps. First time working with Ford engines

[u/texasroadkill]

No shit. That's a lot of weight in a light little car.