I have one. I spent a long time restoring it(mods and touched-up/clearcoated playfield)- I post some pictures later. It's a fun game and I probably play it as often as my other pins (maybe a little less than RS, but more than SOF).
When I do play it, it has a lot replay value, it seems. I never seem to play less than 10 games once I've played one.
As for the mods, don't be surprised if SOME have already been done it. It is working, so they are either done already, or it's just in great shape. The most basic (and most necessary) mods don't take much time to do, it's basically just getting the ground wiring all linked together and replacing a couple big caps in the bottom of the cab.
I bought mine, non-working, untested, in 2003ish for $300. I took it home and foolishly turned it on only to see smoke pour out from the playfield. I did all the mods, and fixed the driver board and got the thing working. Still, slowly over time, I've gone and bought a lot of the new modern circuit boards for it. It now has the new CPU, driver board, and PS board. If it breaks anytime in the next 50 years, I'll be surprised