I think 11k is an over exaggeration, unless the shop work these guys get is around 8k. That link is from one of the SVT forums with a set up for strong Idependent Rear Suspension for up to 700hp, and costs around 4k (All the hardcore drag guys go to solid rear). Plus, a pulley, cai, and exhaust on one of those things makes 440. Some DR's or just some upgraded rubber will do wonders. Look at any domestic coupe that is offered, minus the Z06 and ZR1 the stock tires are junk...hell, minus the STi most stock rubber is junk...
I was just saying, if he is looking for a fun sports car then why not consider other options? He already had a Subaru and already has a good daily driver. So I was just throwing out my opinion that if he wants something balls to the wall, crazy fast, and fun I would go with a Cobra, Vette, GTO, etc...
http://www.svtsnake.com/forum/showthread.php?t=18264