Starting a car in hibernation for yrs

[72Heaven]

This is probably a bit late, but I'll toss it out there anyway.

I have an '87 Iroc that was stolen and sat for nearly 5 years, when I got to it, the car was sitting on 3 flats and had a doa battery. I got a battery, and aired up the tires with a bicycle pump enough to get it to the gas station. It fired, I let it warm up, added a little oil, and some tranny fluid. And drove it to the station.

Left it running, filled it with premium, checked all the levels, and drove it 200 miles home.

Now the 350 had been replaced with a 305 or I would have taken more care, but it still runs fine. 45mph was a struggle at first, then 55, finally 60 was as fast as I wanted to go on the rotten tires (they did fine, even ran over a raccoon without a problem).

What failed (after the trip):
Belt/hoses/speedo cable/left front tire/shifter cable

What didn't work and now does (freed up):
alternator (wasn't charging, and now works fine) Wipers (all full of crud and rusted) rear brakes/emergency brake

What still doesn't work: radio/trunk pull down

It was a noisy, slow, smokey trip, but I'd do it again.

What I still need to do:
repack wheel bearings, flush tranny, or just rebuild it, works fine but for how long? Clean, clean, clean.