Ok guys looking for some advice on stall converters. Details are as follows : 351w fresh build all forged internals just had it dynoed at 435hp and 430ish ft/lbs tourque N/A and i have a nitrous kit that i plan on spraying at least a 150 shot. Tranny is a built up c4 man valve body. Tourque on dyno pull was consistent 430's from 3500 - 5500 rpm. Gears are 4:10 with 275 60 15's. What should i be looking for in a converter? What stall?