well h22 is a frm sleeved block so to do boosted u would need to spend money in resleeving/ without sleeving the pistons have to be frm compatible h series parts are more expensive for sure but the engine is a beast i have a h22 love it but if u are looking to build it or turbo it be prepared to lighten your wallet...b series engines are easier to work with and parts are plentiful on here