you could deck them off but you will loose deck . and need to rework the pistons or go to a custom CR piston the 1017-1 gasket is for a 4.530 max bore and is big on CC so if the o rings are smaller then the 1017-1? if the fire ring of the 1017 is bigger then were the wire groove is in the deck just take the wire out of the deck and used a bigger head gasket bore if that will not work use copper wire with the 1017 if you have to. if you can re work your pistons for new deck