What does it run right now?
60', 1/8, 1/4 etc.


Low RPM = 5000 RPM shifts?
I'll take a stab @ it, you should run a 2500- 3000 RPM stall. 10" converter.
But, really need to know the full build on your engine to really advise you.

MBHD


12 port SDS EFI