Originally Posted by
ShockerGT
The stock tranny will be your worry spot. There are some that last at 400whp and some that break at 250whp. It's all in how you drive it. I'm not too sure about the USDM 2.0L and how much hp the stock motor can take, but I'm pretty sure it's less than what the USDM 2.5L can handle.
Stock for stock, yes, but the 2.0 is still a tough little block. But, OP, STi is better in every way.