OK, so go to your local Craigslist and do a search for cars+trucks, max price $2010, must have image. From the first page of results, post your pick for a 2010 Challenge car.
I have an interesting Ford Maverick with a 302, a '94 Civic with a B18, and an IROC w/o a motor, but I would stay with mid-engine and go with:
$1600, V-6, money left to do a 5-speed conversion and nitrous.

'88 festiva with blown head gasket, $400