You got a steal of a deal. What you need to do is see what the Infiniti deal has done to the car. If there was not 60 or 90k service records, find yourself a good 3rd party mechanic that can flush the transmission (not just dump, flush) and change all other fluids. Get the plugs changed out, in-cabin air filter, air filter, gas filter. You can get alot of the parts from everythinginifiniti (look for the links) which is actually Scotsdale Infiniti but they can mail order the parts to you cheaper. Have the mechanic also check the torsion bars, if the rubbers parts have not been serviced you can order all new bars or have the rubber replaced (it is close to a wash between the parts price and the labor to get at the rubber).
Next thing to figure out is are any of the shocks leaking yet. Probably they are and are shot. So you cannot go down to your local guy and score new shocks as they didn't see enough of these to make afternmarkets in the US. If you plan to keep this awhile and want to make the car handle really nice, you can get set of KYB SR Specials from folks (personal e-mail me
[email protected]) and you can get them, but they are expensive. Than again the stock ones even with the discount from Scotsdale are going to run you close to $500...either way your shocks are done and you need to replace. I also lowered my car and with some good aftermarket springs, but the main thing is that your shocks are history.
This is a great car. i have had my 1997 for 8 years and it has been completely trouble free. Just get it up to speed, maintain it, and you will get many more years of trouble-free rides out of it. Oh, and don't even think about burning 87, bite the bullet and use the good stuff.
I see your out in the desert, I don't know of any good aftermarket mechanics, but if you have the opportunity to get it to West LA I can recommend my mechanic who knows the car well and will do your right.