It's unlikely that I'll ever stumble upon a cheap A12 car or Hemi Superbird again like I did when I was young. It might be cool to have one but their values go to hell if you don't have a numbers matching car and you have to keep them stock. The more miles you put on those cars, - the more their values drop.
I'd rather build cars that I can personalize and enjoy driving. When the day comes that I need to part with one I hope I don't take a bath on the sale.