Welcome to the board, GRM! With that amount of money you should be able to find a pretty nice 72 - 74 Cuda or Challenger. The 70's and 71's are going to be more expensive, but if you don't mind working a bit on it, you should be able to find something. Beware of eBay right now...scam artists are offering "too good to be true" deals...hopefully no ones been taken for any money by these clowns.
Anyway, welcome again and I'll keep an eye out for ya.