Might i suggest the Jackson Racing Supercharger? All around its better than a turbo on a stock H22, especially with you having an SH like me theres only so much power you can put to the wheels before the ATTS unit doesnt work anymore. The JRSC runs on 7psi, no internals needed, comes with a warranty and can pass an emissions test with no problem. Bolts are not required, but as with any engine they will help.

Only real downside to it is the type of engine management it has, most people will tell you to get something else. Again since you have the SH you're gonna want a piggyback system so you dont lose your ATTS.