^The 85mm block is on stock B20 sleeves, not sure if you're interested in it since every one is scared of running it 1mm over, but you can bore an ls to 83mm and they're scared to bore a B20 1mm over, lol. ANyways as for the pistons, I don't knoe man, give me like $150! New WIseco rings from gear head are $100 so a total of $250 it will cost and you can have nice Wiseco Turbo pistons!