Contrary to popular belief, vtec = good for turbo.

Boost a LS and GSR 8 psi and see who makes more power. Push it up to 10, 12 psi and the GSR will still have the edge. You can boost higher with a B18B motor, but that doesn't mean more power.

As for your next mods, get some good shocks (koni yellows come to mind), and a hi-flo cat (carsound)

Shingo