Welcome Aboard neighbor! The basic frame rails are the same but the body mounts are different, the rear horns are different, and I believe there is a difference in the area where the fuel tank is. Truck to Burban frame swaps have been done but it isn't a simple bolt on.
If you use the search box above and search "truck suburban frame swap" and click the 67-72 button you will find lots of posts like this one.
http://67-72chevytrucks.com/vboard/s...d.php?t=239942
Good luck!
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
RIP Bob Parks.
1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB repair thread
http://67-72chevytrucks.com/vboard/s...d.php?t=698377