Ford Racing Puma will be a classic, I have already seen the prices double in 3 years, really kicking myself I didn’t jump at the one for £2k a few years ago yes there was rust, same goes for the Mk1 Focus RS. For some reason Ford classics always go for a fair wedge of cash, but not before they hit rock bottom prices.
Skyline GTR’s
GT86
Audi RS’s 3/4/6
Integra Type R
Clio 182/172
205 GTi
M3 CSL’s
Impreza
The only way to buy a car with the hope it makes money, is to buy the most standard/original well kept one you can and then put it in temperature/humidty controlled bubble for the next 10-40 years.