scott its a fairly new intake bought it in nov. the heads been on the motor since 2001 which at that time had an single panel intake on it which didnt leak. maybe my torque wrench aint any good already broke a bolt last week, and today broke the inch pound torque wrench. on anything project. looks like i will be pullin the intake tomorrow sometime:( i step forward two steps back keep this up the single panel and 600 holley might find its way back on the motor. im headed to the chat room.