My 06 GT has 217,000 miles, I still drive it over 80 miles a day during the week. I bought it new, here it all it has needed (Besides oil changes and the like)
Front brakes tend to last me over 100,000 miles.
Rear brakes last 80,000 (Strange, all my other vehicles, the rear brakes outlast the front in a big way).
Alternator replaced at 210,000.
I run the Champion 7989 spark plugs - 100,000 seems to work fine with them.
Rear axle seal - 215,000 miles. Did both sides and bearings while I was there.
Driveshaft seal on the manual transmission - just started (217,000). Note that when the fluid is low because of this, you get a rattle that sounds like an exhaust rattle, but it isn't. So fill it quick, because it can't be good for the transmission. Took me quite a bit of time to find that rattle, but it went away when I filled it. I'll flush the fluid when I replace the seal.
Blower motor resistor - replaced twice.
Tie Rod Ends (Inner and Outer) at 195,000.
Needs strut mounts now too.
Everything else (Except aftermarket exhaust) is factory stock/original. So a pretty rock solid car. My clutch still working well, so I can't comment on replacing it yet, but I will do it myself. If I could pick one up for my kids at $3500, I'd probably take the chance. If you drop another $1000 in it over a year (Clutch and whatever else you may find) you would have still made a good deal in my mind. Only worry would be if the transmission nears work. But as Sparta said, that could be a problem on any car. Any "good running" car could have bad syncros and stuff, so I still think I'd take the chance.