If you want a 4G VTEC, IMO, I would look for an SI with 4WS ( I love my 4WS, it handles incredibly), then swap an H22a in there. A less expensive way would be to just find a well maintained 4G VTEC...they're rare, but you can find a deal on one if you look hard enough. Yet another way to have a DOHC 4G VTEC would be to find a SI (2.3 liter DOHC non-VTEC) and put a H22 VTEC head on it (also known as a Frankenstein swap), but it is expensive, not as reliable, and I would not reccomend it.