I dont understand why everyone has such a rager for the overpriced (IMO) JWT turbos. Z1's lack of quality control is one thing...but if they both start with the same turbos (again, this was my impression, dont know for a fact) wouldn't the quality issues be with their kit and not the turbos themselves?
I myself with probably go with the GT675s with the .64 A/R housing after riding in a buddy's car that spooled damn quick and hard without even having upgraded manifolds or 3" exhaust that I plan on installing.