First of all I will say that $35k asking price is crazy for this vehicle....and second I will say that it is possible he spent $60k on the Jeep (which is even crazier). Years ago we had an older guy in our club with a restored CJ-7 very similar to this setup except it had a limited slip in the front and Detroit in the rear, and a built 360. He never did tell me exactly how much he had in it, but did make the comment a few time he could have bought a new H1 Hummer instead.
The big key is the comment that it was professionally restored which leads me to believe a shop did all the work. That can lead to a very hefty labor bill, then start adding up the parts. $5k for the body, $2k frame, $2.5k for engine, and I know people can drop $1k on a D30