meh subaru's are played, get an e30 325ix, way better than any subaru you could get for the price, and probably the funnest awd car you could get for under like 20 grand. and 5 grand would get you a really nice one. super reliable, and very tough.
theres also the mazda 323 gtx, mitsubishi galant vr-4, audi 90 or coupe quattro.
I'm pretty sure most of the money was dumped into a really adjustable suspension, I'm not sure on specifics, not a huge car person myself, all I know is its his life and he races some sort of event on an almost weekly basis.