I have a black 996TT 6 speed coupe I'm looking to sell. It doesn't meet all your requirements RE: full service history and stamps, but it's a very solid car, with good DME results and has had a lot of recent maintenance. I've recently replaced the power steering reservoir assembly, water pump, fuel filter drive belt and motor mounts. All fluids have been flushed and filled within the last 8 months. The previous owner also replaced the alternator.

The car has a mild tune that brings it a little bit above X50 power levels. Has a RUF exhaust ($8000), short shifter as well as 19 inch wheels. The Hankook Ventus tires have plenty of tread left.

The paint on the front bumper shows normal wear and tear for the mileage, but otherwise the paint is in great shape. The car has 89.5k miles.

I have it listed for 45k now, but I have room to negotiate. Let me know if you're interested.