okay here's my question to the wise people of automotive forums

...i was wondering what you guys think would be the best car to purchase for under 5k...i know that's not much to work with but i want a decently fast car to start off with and i want to make it fast...because that's what's fun about having a car right? well i would prefer rwd but if there's a fwd offer that i just can't pass up then i'll go for it...i have seen some non-turbo rx-7s and some non turbo supras for 3k to 5k on ebay...maybe you guys can give me some advice...thanks
~Brian