Get rid of the .63 rear and go with a .48 there will be a huge difference in lag between a t3 and a t34 .63, I run the same spec 55 blacks, cooler, 4x4 inlet and a t34 .48 it makes 400ft lbs @2900rpm which is a good kick in the arse, if your running a 4x4 exhaust manifold it may come on even quicker.


Running 30psi you may eventually run into head gasket issues.