904 Identification

Plymouth 65 said
Torque converter stall is important. You should decide based on rear gear, tire size, camshaft, weight of vehicle. 65'

I was thinking 2,500 stall. It has 3.23 rear gears in it at the moment, but I wanna go to 3.55 or 3.91 in the future. It’s a 65 Barracuda so the weight is pretty light. The rear tires are going to be big meats. About 12 inches wide.