Replying to Best cars for perormance tuning?

NS,
In a few months I will be selling my '99 Nissan Altima SE Limited, in order to buy a tuner car with manual transmission. (my altima is automatic.)

In your opinion, what is the best car to buy at a good price (under $6,000usd), and tune-up the engine?

I want something with a V6 engine and front-wheel drive.

So far I am thinking about..
-Toyota Eclipse
-Honda Accord V6
-Acura Integra

Please post with any suggestions.
It does not have to be one of the 3 i listed.