yeppers.... i have a rb20det in my r31 and im gonna put a vg30ballbearing turbo on it, get a remap and run a z32 afm...
jeff from speed lab recon that should c me round 190+kws... i think from memory a remap by jeff is around the 500 mark but could be wrong..
i found my z32 afm from kansai, they were pretty helpful, also try the for sale section here and ns.com... hope that helps a little