i am not following you at all. What do you mean "the proper trans"? Or a trans to handle the torque of the motor. That motor is not making any where NEAR the breaking point of that LS transmission. The clutch would go long before anything in that trans should. There is no right/wrong trans. A b series is a b series. I know people with boosted ls's up here running 250+whp all day long with no issues. Im using a gsr trans on my LS block.