You can convert a tilting table saw to a tilting arbor saw by making a shroud stand that supports the saw by the table. Then, the entire saw tilts, and is supported by the stand, while the table remains stationary. Iv'e seen this done a couple of times, on these old delta saws.
I personally would not do it; I have a $50 Craftsman 10 inch saw that's equal or better than these old deltas, and recently bought a 3 hp unisaw in perfect condition with a Biesemeyer fence for $250. For that kind of cash, I absolutely would not take on modifying one of these old saws.
I bought a tilting saw/6" jointer set a few years ago for the 6" jointer, which was in excellent condition. I kept it and sold off the saw cheap, ending up in the jointer for about $25. The jointer is excellent; but I wouldn't use the saw if I absolutely didn't have to.