alight, i have a 97 t/a with a 4l60e, the basic rundown of the car is a 383 lt1, obdi conversion, 3200 vig stall and the trans beefed up. i've been stuck with the no shift issue and looking to go to a new transmission. i want to keep overdrive in the car, as i drive it to the track (2 hours away)

i was looking into a 200r4 or 700r4, any ideas on what would be more suitable for me, or is there a different tranny out there that would suit the car.