My rec is to forget this "speed" thing and go for something that you will enjoy driving at normal speeds. How bout a MINI!
Here is one that is one of 30ish in the States for just above 5k
JCW R50 for sale - motoring|underground
Could be a good deal if you can fix it
2007 Mini Cooper S - North American Motoring :: Marketplace
Nice one, but a bit high $ and on the West Coast
FS:: Mellow Yellow/Blk R56 Cooper S 2007 w/JCW Aero Kit - North American Motoring