Joel, what turbo did you end up getting, or are you still deciding?
Have you spoke to Ben at Tilbrooks (Brains) He has a R31 wagon with a HKS 2530 on a Rb20, been in Zoom etc. That car goes pretty hard. It makes around 220 at the wheels, but being auto with 2500rpm stall, I don't think lag is to much of a problem in that car.
I think that fact remains that any bigger than stock turbo will be a bit laggier, but the trade of is consitant boost right up to the redline
I am in the process of getting **** toghether with my car for a bit of a power-up, including turbo, bigger intercooler and maybe new injectors or pressure regulator on the existing ones.
Let me know how you go
Chris