Swapping Suburban Tailgate to Doors

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Hey all. I did a search on the forum for this but didn;t come up with anything. I have a 77 Suburban with a tailgate and the window levers keep popping out of the plastic wheels in the tracks and the window falls down, most of the time it happens just while driving down the road not even raising or lowering it. I'm sick of farting with it.

I have a friend that has a late 80s parts Suburban with barn doors he said I can have. Is it a straight forward swap? Can I use all the parts off the parts truck or will I need to buy anything to make it work?

Thanks for any help. -Ben