I dont know that I will. I could spend 1500 on a set of stickies and rims (stock size) to stay in stock class and be competitive, but other than that I cant do a heck of a lot.
I may eventually buy a dedicated rwd car for autocrossing that I can mod (a mx5 or mustang, maybe even an rx8) BUT...that wont be in the immediate future.
My immediate money waster is because Im also a gran turismo nut (I like need for speed shift on pc as well) and Im seriously debating finishing my garage so I can build a dedicated sim cockpit (which after a 2nd ps3 and another lcd tv will get costly as well).