Bit of an odd car but would make a great "Locost" project.

Single Seater Reynard Formula First car, these were designed to take Ford FWD running gear in the middle so could be an ideal way to build a single seater on a low budget.

http://www.uphillracers.com/showthread.php/van-diemen-formula-first-roller-12908.html

I could see a decent project coming out of that - I've just bought a new house otherwise I'd be tempted

Have you seen the bike engined sports libre car on eBay Callan?
Search 'hill climb car'