is it possible to fit or make a screamer pipe to an impreza, ive seen lots of mr2's with them on and was just wondering why no one has them on there impreza's

 

Yes you can have a screemer pipe on an impreza. It will cost you though.

An aftermarket turbo of a rotated variety will allow these to be fitted to a scoob. These require an external wategate which is where your screemer pipe will come in.