Diesel Tow vehicle options

[CamarosRus]

Thanks for your expereinced opinions/comments.

Evidently no one on this web site (being G.M. muscle car owners) is a fan of the Dodge/Cummins with 6 speed stick.
I had been looking at a 2003 (non catalytic convertor) 3500 single rear tire Quad cab long bed six speed but could get seller to come down on price. He claims to get 20mpg empty with a stock cummins and hadnt pulled any box trailer to know.

If I go with a USED Chev/GMC truck I'm inclined to like the 2500 extended cab 2WD LONG bed. I want the long bed because it seems so much more useful when actually using the truck for misc chores, or possibly carrying a small camper when on the road with car trailer, (or has anybody made a bunk area in front of trailer?????)

What are some absolutes on buying a used Duramax regarding knowledge of previous maintenance. So many used trucks do not have proof of anything ?????

This truck will sit alot and I dont have a business to write it off against...........

Thanks,