Help with the unisaw

almost a year ago I went to pick up a 15 dollar shop vac I found on Craig’s list.
When the guy opened the garage I found a full shop of wood working tools. The seller had accumulated tools in hopes of starting a cabinet business. Long story short, 15 years later he’s retiring to the south, never to get the shop going. I had just bought my first house and thought one day I would like to play with wood but I still had a full year of renovations. The seller had a week to clear out all his tools. After two days on the phone and not really knowing what I was negotiating for and almost not really caring whether he sold it to me or not, I went back and bought the Unisaw. I paid 450. I was told he bought it from a shop that rebuilds them. It still has fresh tags on the power cord the original style fence, kickback device and miter gauge are still in the new box. It also came with the right side extension to match the installed left side extension and a safety manual that had never been opened from it’s package. I don’t believe the saw has been used after being rebuilt. I have done some looking around on the internet and I believe I bought good but I still don’t know what I have. I can use a little help.
Here’s the info on the saw and motor. Rockwell #83-621 single phase 1.5hp 3500 rpm 115/230 volt
Saw is Delta 35j21190 34-761s
I believe I have the lower end of the scale with this motor but have the better rpm setup offered with the 1.5 hp.
How old is this saw?
I do have a tabletop table saw that I installed a delta Delta 36-T30 rip fence which I like.. I was thinking to install this fence on the unisaw. Should I use the original fence?
I finally have moved into the new house and would like to get the saw going. I have cleared out the garage and positioned the saw.
Thanks in advance.
Paul
Ridgewood NJ