Restoring a 32 year old vehicle is bad enough, but restoring a 32 year old vehicle that was in an accident would be extremely difficult. Through my restore of my 79, I've had a hard enough time just figuring out what's missing and what goes where thanks to my wonderful PO...i know i had to rebuild/box the frame from the transmission back plus i swapped on a glass body from nose to tail. It was a ton of work!
I can't imagine just swapping some of those parts and having a running vehicle out of that one. Before you know it, you'll have a garage full of jeep parts just from trying to fix one problem and finding another!
Also as Ken said, if you can, you really want to drive it. I bought mine with a blown head gasket and never drove or heard it run. The rear brake lines were disconnected, the front driveshaft was bent, the rear driveshaft was redneck welded, the transfer case had a chipped gear, the transmission had parts coming out of it. After replacing the head gasket, I found out I have a cracked block and it has tons of blow by. Moral of the story...it's nice when you can drive it!
I'd pass and find one thats closer to being drivable.Good luck!