Corvette Stingray 1971 T TOP
Kia Cee'd?
Or at a guess Corvette C6 (not sure if the z06 is available for this budget doubt it!)
get a jag you get a good jag for that money
Id strongly be tempted by a Nissan 350Z.
I can't think of any car i actually properly want for £8k.
Assuming i didn't actually have to afford to run it, probably an impreza. Something like this :
http://www.pistonheads.com/sales/2993120.htm
Would that really cost so much to run?