current best solution IMHO is to get an OBD0 PR3 or PW0. I/others are working on a special code/hardware mod that will let non-vtec computers like the PR4 run vtec motors. This is still in the developmental stage, so unless you get excited over fuckin with car electronics, I'd say stick to the tried and trusted method - PR3 or PW0.
Shameless plug: I have a PR3 for sale right now.