[natey]

Yes, all '89 944 turbos in the US had all the turbo-S equipment (so I've read). There's a current thread over on the 944 board here about what to look for to tell if it's a -S, if you want to make sure.

Airbags and antilock brakes were standard equipment on the -S (again, so I've read.) Mine has both. Airbags are very easy to look for, if you're looking at a particular car.

The bodies are galvanized, so rust is not a common problem on these cars. If it's rusted, it's probably had some body or paintwork.

Otherwise, I don't think there are any problems that the -S is prone to beyond what a regular 944 turbo suffers. This is a topic that has been discussed several times over on the 944 BBS here, by much smarter people than me, so I'll refer you there for a list of what to watch out for when looking at a 944 / turbo.

Cost...$12 to $18k, depending on condition, mods, and mileage? I got mine for around $12k 2-3 years ago, but I would guess that's as cheap as you'd see a good example go for. They're fairly desirable, at least among the 944 community. I'd guess an average asking price of $14k - $15k? Condition is very important, but I'd guess most turbo-S cars have been well cared for most of their lives. YMMV.