Ok well I currently have a H22a engine in the shop and I was thinking of either sleeving the block for boost, pistons etc... or getting and h23 and doing the same thing to it but mounting the H22 head, or should I just use the hole H23 or just stick with the H22a, what do you guys think?

 

all you have to do is install H23 crank in the h22 block. It would be the easiet thing to do.