If you want to run forged pistons you HAVE to sleeve a h22 block. There is no getting around it. There are "rumors" that coating the pistons work, but it hasn't been proven yet. The cyl walls on the h series motors are FRM, can't be honed, and can't run forged pistons. The choice is up to you, any iron dextile will work i guess?


*edit: they "can" be honed... so that wasn't totally true. but only to about .02"