How bad would this be (just a idea)

[TehNewGuy]

So my 2001 silverado just took a huge beating and the bed and back cab are pretty mangled. I was joking with my wife saying I was going to put the 66 body on my 2001 frame and just drive it with all the newer parts and the old body style. After she stopped cussing at me, I explained it was a (bad) joke...

But i got me thinking, I wondered if it was possible and who better to ask then you guys!!! Because there is just about a whole nother truck in body parts lying in my backyard... (wife calls it the boneyard, something to do with Lion King...)