Hey guys, I'm a Subaru guy, but I've never owned a GC8. Recently a really clean imported GC8 STi popped up 15 minutes away from me, and it has no rust, 90k miles, and everything original. It is also completely stock, except the owner suspects a tune or upgraded turbo because it pushes 18 PSI when it's supposed to PIUSH 13 PSI stock. The only thing that puzzles me is it has equal-length exhaust manifolds. He is asking 18.5k but said he is negotiable. What is the going rate for a car like this? And what should I look out for? Thanks!