Swapping frames seems logical, but once you dig deeper, not so much.
This has been cussed and discussed many times. The newer frame will indeed have a wider track width and the frame itself will not lend itself to mouunting the older cab and bed without significant modifications.
The more cost effective approach is to modify the existing frame by using the front suspension from a newer truck. As for the rear suspension it's good to go as is, or you can swap out a newer one if you so desire.
Plus there are the "legal" issues involved with swapping a frame into a truck, and the associated VIN number related issues.
As for the SRS in-cab air bags... yikes! That one will be quite the adventure. You'll need to swap out the sensors, and likely the dash and column out of the newer donor vehicle.
Given enough $$$ and time anything is possible, but updating your truck and frame is the most logical approach, IMO.
Last edited by Hot Rod John; 07/20/2012 7:57 PM.