OK I have just got a 92' prelude si two weeks ago. There is only 20,000 miles on newly factory rebuilt engine. I'm on a low budget, and dont know what route to go. Should I go with the H22a swap or would it be cheaper or even possible for me to just put a V-tec head on the H23a. And about how much would it cost to do ether. I dont plan on doing these for bit but it will be nice to know.