the b20 in the 2nd and 3rd gens is totally different than the b20's in the crv's. unfortunately, the b20's and b21's of yesteryear don't share alot with the modern b series.

boosting that engine could be dicey, and i think you'd want to completely build the bottom end and run conservative levels of boost, but i don't think anyone's ever put that much work into that engine so i'm not sure if anyone knows what the tolerances and limits are. still i'm sure it's possible, and with the right amount of work it should work well enough.

anyway, good luck man.