I have a 2005 standard cab 3500 drw with a bent frame. I have access to a 2007 quad cab short box frame. Both are 4x4 and both are the same wheelbase. Question is can i use the quad cab frame on my truck without MAJOR reworking of mounts etc?? Any assistance would be greately appreciated.

 

I suspect there is significant variation in mounts. A simple search of parts cataloge would be a good starting point. Even Junk yards have such a tool that frequentlly has better information than the factory parts manual. It may be that relocating four mounts correctlly is all needed. I am only speculating, at least look at frames and measure first.