Well the other day i was cleaning my car and i started it up and noticed a slight knock coming from #1, so i figured i would bust out the spare block ive had collecting dust for about a year now and put it together, since im already here i want to up the compression a bit, using all oem parts, is it better to keep the original pistons and just use a two layer head gasket or can another piston be used, ive been looking around and i would like a set of PCT (b16b) pistons but those look like they would hit with the deck clearance, i can't decide what i want, i will be using all stock internals with a CTR intake cam, i just want to up my CR a bit, any suggestions on what pistons i can and cannot use, any help would be greatly appreciated thanks in advance