I did like this when i started to "fix" mine, i simply bought an cheap driveable Cherokee XJ of the same year as donator.
I have got parts from it to cover the price of the XJ + some more, and i may still be enable to sell the rest of it to a junkyard.
Only parts i needed/need so buy new is oils, filters, brake shoes, rear leaf springs. all other things i got from my "donator".
Saved me from driving around to find parts at junkyards and i have allso sold some stuff to friends.
Did like that as i dont want to spend a fortune on it in new parts.
(and as i probably go offroading, i have fenders, hood, mirrors and so as spare