Here's a car that is probably one of the most admired sportscars in the world. It wasn't much when it appeared and Porsche wasn't even sure they would be able to sell 400 of them. It's the Porsche 911 Carrera 2.7 RS. It basically was a homologation special with lightweight panels, a bigger engine, zero interior comfort and this funny spoiler on the back of the car. Many people put a similar spoiler on their "normal" 911 to make it look faster, so it created a trend. The car was good. Thanks to the low weight (less than 1'000 kg for the lightweight sports version) and the bigger engine with 210 hp it accelerated better than most other cars from that time, including most Ferraris. The car was so successful that Porsche had to build 1580 cars. The fact that the later cars got closer and closer to the normal 2.4 S model is another story.
I could have bought a good one for roughly 50k € a few years ago. Sadly enough I didn't go for it, as the same car today would probably fetch at least three times the money. And it's certainly entertaining to drive.