dude - I was just drooling over this on ebay:
http://www.ebay.com/itm/2008-Radical-Supersport-SR3-Race-Car-1500cc-Paddle-Shift-with-Blip-Mint-NR-/111592982053?forcerrptr=true&hash=item19fb75c625&item=111592982053&pt=Race_Cars_Not_Street_Legal_
not a real fan of sport racers, but I could get behind one of these. more bang for your buck open wheel, however - can find a non-competitive formula continental for $10k and still be scary fast.