Aerovin is right.
Back then, that was a ton of money. I have heard of deals that were even less a few years after that. I have a couple of different interests besides Warbirds. And they are exactly the same way. The prices that they had cost in those days were nothing compared to what they cost now, and their rarity is generally more than a warbird.
The other thing, with airplanes anyway, is where do you put it? Airplanes, including ones that don't fly, cost you money every month.
It is always the same. I have bought Books, Porcelain, Art, Wine, Scotch, ect, ect, and an Airplane project, and everytime, people looked at me like I am an idiot and some called me an idiot for spending that kind of money on that boring "stuff/junk". However, now I am looking like some kind of genius visionary 10-15 years later, when that stuff is worth an a$$load of cash compared to what I've paid for it. Doesn't matter, I'm not looking to sell.
BTW, that stuff, including airplanes, is never an investment. It is a burn barrel to throw 1000$ bills into. You can do way better with a house, or a conservative investment plan in the same period of time with the same amout of money. You gotta really love it baby, because you're gonna pay until it hurts. One other piece of advice, don't ever buy anything because it is a "good example" of the type, or because you think it will get get valuble in the future. It doesn't work. You'll end up walking around that cr@p just to get to the bathroom and get more p1ssed off everytime you do. I know. You gotta really love it.
I'm rambling, and I don't mean to cr@p on the beautiful dream. I guess I am trying to say, the same thing is here now, you just won't know it for 20 years. There are a lot of T-33's, Stearmans, T-6's, ect out there waiting for you to be a genius visionary. Just do it. It is gonna probably hurt. You'll know how successful you are going to be when your kid complains that her bike is trapped behind the blown up 1820 you just put in the garage.
I have the dream too. Besides saving the second XP-67 from scrapping, I'd score an SBD and a Hellcat.