I'm going to incorrectly assume everyone is like me and say:
None of them. Don't do it.
Buy a race car instead. Usually that's like telling someone they should really try smoking crack, but you're already committed to spending tens of thousands of dollars on a frivolous purchase so hell, it might as well be epic!
The type of race car is irrelevant, it really is.. Spec Miata, 944, E30, Honda.. doesn't matter. What WILL matter is
racing and no used sports car will even compare.. won't even remotely compare to the hard-on you'll get from actual racing. You will never have as much fun in an NSX, Cayman, RX8 or whatever.. as you will when you're taking the green flag and bump drafting your competition down the straight.
I've owned an S2000 and have spent my share of time in an NSX, Corvette, Lotus, 996, etc etc. Not one of them is as much fun as racing, even racing shitboxes like chumpcar.
For half the price of any of the cars you listed, you could buy an open trailer (that your 4Runner could pull) and a fully prepped, race-ready car and have enough cash left over to run a full season.
You're 34, I'm 34... So you can trust my advice.
