OK...I was able to snap a pic of the engine and head casting number. The head casting number is 522010. If this is familar to anyone, let me know. The link to the photo didn't work.

Thanks in advance.

Scott

1964 GMC 1002 Long Wideside w/305E V6 & sm420 "Blue Jeans"
1996 Harley Davidson FLHTCI
1981 Husky 250CR
http://community.webshots.com/user/gmc1002hf5669a