How much money do you put into a car?

I try not to get too upside down on any of my projects. I don't think I could ever spend over $25K on any of them. I don't mind doing nearly everything myself, that way I'm only spending money on parts. I've never cared about matching numbers stuff (added waste of money, IMO, and "ties your hands" on doing any serious mods) and nearly all my cars started life as slant 6's.

Maybe if I was richer I could consider it......