It does have 2 bolts on the top of the valve cover and does say GMC in the center. It appears to be a mucher larger motor than the 235 I have in a chevy coupe. I will get the gunk cleaned off the motor today and locate those number you described. I have taken more than enough pics of the truck and will get them up in a few days. Thank you and I appreciate all the info on the truck anyone could give me. I feel like a kid on Christmas.

Panhead Joe

Last edited by Panhead Joe; 05/30/2010 11:26 PM.