Your better off leaving it around the stock location. Even though depending on what you want to do its a pain to get to. The turbo, manifold, o2 housing and downpipe are in the rear of the engine.

Whenever replacing any part back there usually like a O2 Housing you might as well do everything all at once... ported manifold, 3" O2 Housing, 3" Downpipe, ported and clipped turbo or one of those re-worked stock turbo's like PTP's SST.

There's many other options... you could just go outside of stock bolt on parts and go with a bigger turbo and what not.