It really depends on how old a car you are prepered to go for, and what sort of driving you want to do. You could pick up a 10 year old VR6 for that which will give you plenty of power and speed, but is not the most nimble of cars, or you could shop around for a good modified mk2 with a VR6 engine transplant, or a G60 for less, that should provide loads of fun and speed and handle a lot better, or even a mint mk1 with a bit of change left over, that on the right roads, will give you a huge grin factor.
