Thanks again 3B, I know that this might tax your library a tad. Is this first year Coe for GMC? I remember you saying that all the larger trucks 2.5 and up were GMC's not Chevrolets in the 30's-50's. How come so many engine combo's for GMC? Lots of questions. We are hoping this is a very large truck for it's day. Parts may be a little hard to find,... got one lurking around the barn 3B?