has anbody done this???

[1968aj]

let me try to explain. I bought a running driving but damaged 2006 Silverado with a salvage title. 5.3 engine with automatic. got it to swap engine into a 72 Cheyenne super lwb that I also plan to have shortened.called several shops tha specialize in ls swaps. one shop told me he could put the 72 sheetmetal on the 2006 frame and make it run and drive like a 2006 . I have never seen this myself but he claims to have done 2 of them I can come see. has anybody done or seen a truck like this?