Ok here is the run down. I bought a 89 24' Mach 1 with a 454(only 80 hrs!) last year. Before i got a chance to take it out my father managed to put 3 cracks in the heads. I pulled the covers and seen that it has gold rockers bolted on it and all the components look basically new. The cam is a bigger cam but i do not have the specs on it. My problem is that i can not seem to find th rectangle port heads bare. I came across a set of 781 heads that has 2.065 Int and 1.720 exh valves installed. Can i use these and just bolt my rocker arms and springs on this? i know the best is a valve job but im just looking to get the motor functional so i can enjoy some time on the water. Also the heads have new valve seals & guide plates.

How did your dad manage to crack the heads? Was it run to hot? You may want to check a few more things like rings and cylinder walls.

is it a mark 4 or gen 5/6 ? Many sets of heads for sale on here.

Sure , blame it on the old man .

1) either you bought it this way and it froze b4 you bought it or 2) if he over heated it to put 3 cracks in the heads then you have more problems then you think..

Exactly

x3