72 Chevy to GMC frame swap question

[56HOTRODDER]

Hi Been lurking around the edges for a while but now I have a real question. Looked at a 72 Suburban today that is a two wheel drive Chevy body on a four wheel drive GMC frame. It is six lug front and rear, discs in front and a huge plated gas tank. Short of having a stock GMC suburban to look at for comparison, are there any problems with this swap? Other than the wiring isn't the greatest, I cant see any problem areas as to fit and function. Is this as straight forward as it looks? It will never be "correct" but for a driver , what do you all think? All opinions welcomed!!!! Thanks