It's funny how subjective our views can be when it comes to vehicle sounds. I once had a fellow at a gas station in Kamloops tell me my 1995 911 sounded like a '####ty old chainsaw'. Why, thank-you! I just love the sound and smell of air cooled 911's, especially the early 2.0L-2.4L cars, carbureted even better.
My favourite car for sound is the Mazda 787B (Porsche 917/30 being a really close second), it also looks great and comes from an era where drivers were far more involved with driving, and lone behold - rowing their own gears. I love built rotaries, New Zealander's have a knack for building amazing rotary engines.
https://www.youtube.com/watch?v=QtUEPwHnxmU
https://www.youtube.com/watch?v=sxXtpMngivM
https://www.youtube.com/watch?v=HXvjzk3qaP8
https://www.youtube.com/watch?v=QCmw5lbh0yk
Lastly, I'd love to take Mad Mike's FD for a spin!