Hey Gus I have a 03 cobra iron block bored .30 over with cobra rods and crank that needs pistons. there are currently no pistons installed or the rods. The cylinder walls appear ok. the guy I bought it off of said 2 pistons went bad due to detonation but the cylinder walls appear to be ok. It also has arp main cap studs. Make an offer will part out I want it gone.