Is that car an STI or base? I don't know what engine differences are between the two. Bolt ons do help that car as well as computer programing like you mentioned. I know the street tuner aftermarket for it is growing but to tune cars all you need is the programming software and something to burn chips with......so it is logical that these types of shops can pop up in great numbers. But it will take years to have pro race shops building heads and better bore blocks though.

Here is the other thing, with the money for mods you just listed, you still have a stock block, rods and pistons. Turbo is great, but puts strain on the motor no matter what car it is. With the $6000 price I mentioned for a new Mustang motor you have a new pro racing block, super strength rods, pistons, rotating assembly and so forth. If you were to run both the WRX on turbo and the Mustang with the race engine, the WRX would be the first to blow up or run into trouble because it is still largely stock.....see what I mean? I'm not trying to say that is not good and all, I'm just saying that you haven't really built a monster engine. It appears that you get a lot for your money, but what you really get is a bigger number on the dyno, NOT the extreme durability and power as a crate engine has. But you know what, that is fine on the street as long as you don't constantly run the engine hard in the WRX. And yes you have the AWD launches.

Here is another question......how much support is there from Corporate Subaru for these cars? Are most of the parts offered by third parties? Like I said I don't know a lot about them.