i bought some 3.307" BRAND NEW arias pistons for a b18a/b but i found out i dont have enough money for sleeves or nothing so ill trade these pistons with rings, wrist pins and locks for any aftermarket low compression stock bore or around stock bore pistons these arias pistons are the most expensive pistons for the b18a/b engine....so text me if u have some pistons for trade that are a less bore than "3.307