Thanks for the replies so far guys.
I am not 100% sure it's a GMC, as I have not located a VIN tag yet.
From photo searches on the web, I have deducted it must be a GMC. The Chevy grille for the time looks much more different than the GMC grille, the Chevy grille has all horizontal bars. The other differences from the pictures I've seen is that it seems Chevy's have 5-spoke wheels, whereas GMC trucks have 8-spoke wheels.
From what I know the COE body style is very rare, and its unlikely that it was assembled in P.E.
