Well, I'm partial to Honda's so on my file's I start with the '93 Civic or the '98 Civic.The '98 is much easier, if you get either and install a racing chip you can beat the Civic Cup with ease. After the Civic Cup you unlock the Motul Racing Civic from '87. It's quite quick or you can sell it for upward's of 90,000.
With that money there's alot of possibilites.