The Woody D

So i just bought a 1982 Datsun 720 King Cab 4X4 for 75 dollars that has been sitting for quite a while... and there is a lot wrong with it. I also have a 1994 Nissan Hardbody Single cab 4X4 that i flipped a while back, but all the mechanical works. What parts can i use off of the Hardbody? the 720 has a busted CV axle but the Hardbody's front end is good other than tie rods. i would love to upgrade to the hb223 rear axle. Also is there anybody that sells complete doors? Both of mine are rusted out and the door panels are missing. Also is there anybody that sells door and extended cab windows? Any other general information about the truck or any leads to another topic about normal problems or restoration would really be appreciated. Thanks, Aaron