This is what the stock version 8 STI IHI VF-37 turbo look like vs the Steam STX 71 twin scroll turbo.
Hint: the STX 71 is a little bit bigger, but will make an extra 150 whp.
Stock twin scroll down pipe vs the 3" Kinugawa down pipe. Pity it is no longer available.
Kinugawa twin scroll header...still available and nicely made. Sorry, the stock manifold is still on the engine for the comparison. It is actually nice to run by its self for the looks of it.