Them cars would put you back in the seat bone stock. If yours is doggie i'd look into the combo and find whats not matching up. Check cam timing. I've seen people install them 4 degree retarded car was a stone dog. 4 degree advance will give a boot to bottom end. I don't use offset keys i use timing sets with advance notches. If your gonna pull it apart to degree the cam thats the time to throw a new chain in.