Well, I'd be really careful with the coming recession. The prices of those things might drop like a stone. You gaming with a reasonable amount of money but hey, somebody's dumb enough to pay a ton of money for a fast machine. We do live in a capitalist society
Its not scummy at all. If anything it's the opposite - you are preserving a car you love for future people to enjoy. If you make money on the deal, nothing wrong with that.
Only thing is it's not a classic yet, so the equations are different. If you buy a new one at retail, by the time you account for taxes and depreciation, you'll be unlikely to make money on it (all the more so if you finance it!!) And believe me, they will depreciate before they appreciate.
If you want to make money, first get to know the car more than an average "car guy" would... what problems it has and how to fix them. Then be patient until you find one that is broken and the owner doesn't know how to fix it. [Like flipping houses. House flippers don't make money buying new construction or recently-renovated properties. They buy distressed properties and put in the sweat equity to increase the value.]
Also, be careful. Volatility in stocks and bonds has driven some big-money players into investing in tangible assets, things like fine art and cars. You don't want to get eaten by a bigger fish.
- Nothing wrong with saving a car to jack up the price but there are better investments