Hi, My 3800 Chevy's vin tag reads 3E56S023003,which decodes to a 3600.

This 3800 dually has been in my family since new, it has never been wrecked, dented, bent or broken, only a couple very small rust spots. Every thing is perfect, and it has 18" wheels. I talked to a old timer that worked for Chevrolet in the fifties, he said that the original owners manual list's only one 3600 that has a higher vehicle gross weight that's badged a 3800? I don't understand! Anyway, even the paint code does not match anything listed. Also looking for a set of 4 18" dually rear wheels, and a seat. My grandpa said that he never changed the badges 3600-3899, you can even look between the numbers and there is no faded or moving of numbers. He took very good care of this truck, the truck color from front to back is the same, all matches.Have been wanting to find information on this truck, I have always wondered about it. Thanks Craig