440 2D gets my vote. It will be the same height as the RPM, and will make more power. The SD will match the 440 2D in power, but despite the 500+ in motor, the single plane SD is softer below 3500.

I have 1900 stall and a 3.23 in a 4150 lb car with the 440 2D.

I shift 6300-6500 rpm, FWIW

Last edited by BSB67; 11/13/18 11:28 PM.