GMCpanel,
I have seen many truck beds, complete with original rear end etc buzzing down the road as utility trailers. I guess it depends how much time and energy you want to put into the project. Using the bed, frame it's attached to and rear end and springs that are hooked to the frame will certainly take any alignment problems out of the equation..quick and easy! You could paint it the same color as your truck and it could be a bolt pulling a bolt.
Stuart.
Stuart.