Prices of air-cooled Porsche 911 are going through the roof, with old racing and Turbo versions hitting six figures. Eventually all models will follow suit. This means that long time collectors can cash out, and new people wanting to get in can't anymore.
One of the last moderately affordable air-cooled 911 is the SC that was produced from 1978-1983. It served as the base model, but had a 3.0-liter 6-cylinder engine that produced 180 horsepower, Bosch fuel injection and a 5-speed 915 transmission.
This one looks great in silver over black with ATS cookie cutter wheels. The seller says it is a documented one-owner car, with 70% original paint, original interior and 106k miles. They say they have receipts since new, and say it was just serviced and runs good.
Available here on craigslist for $28,500.