Are those hp numbers on a VQ30 or an SR20? I assumed that the beginning of this thread was geared towards trying to bolt a Z31 T3 onto an SR20 T25 based manifold. What I was saying is that just because the turbo works well on a V6 does not mean it will on a 4 cylinder.

By the way 330 hp at 19 psi is not overly impressive especially on a V6 with 3.0L of displacement.

A properly matched straight T3 with a 0.82 A/R turbine housing on an SR20DE(T) will put down about 310 hp at 19 psi...and that is with only 2.0L of displacement.

Bottom line if you are looking for a good upgrade from a Bluebird turbo go with a T28 or a properly specd T3 T3/T4 or T4.

Peace out