Hey guys,
Thanks for the feedback and sorry for the slow response but I thought my mechanic had found me a good head but it didn't pass the pressure test and had to return it. Then he sent my head to another friend of his that thought he could fix it and he tried twice to repair mine and it still leaked on the pressure test. So I am back to square one and still looking for a head. Thanks to Bo for contacting me but by the time I found out about my heads condition he had promised the one he knew about to someone else. So if anyone can lead me to a good 550 diesel head I would be thank full. 

Mike McIntosh
64 Oliver 550 Diesel
Tallahassee,Florida