okay thanks kev when i talked to a couple of shops that use arps they said the biggest problem when people useing arps and something happens is because people dont use the moly and dont torque them down enough. there is a huge diff in tq with motor oil and then moly lube. I guess either way i go it wont be to difficult to replace the headbolts if the head is lifting my buddy uses arp in his car as well with no issues.