rexy exhaust

[Bd4mp-dub]

ok i have been searchin for info on a wrx exhaust on my Bd. all i really have found is that my midpipe needs to be exteneded like 6 or 7 inches. But i am looking for an exhuast once its boosted. does the midpipe still need to be extended if i use a wrx turbo back. also will it need to have custom hangers or will they line up?
I found this on ebay as an example wut would have to be done for this turbo baqck to fit my bd?
http://cgi.ebay.com/ebaymotors/Subaru-02-06-WRX-STI-Catback-Exhaust-Turbo-Downpipe_W0QQcmdZViewItemQQ_trkparmsZalgoQ3dSIQ26ituQ3dUCIQ252BUAQ252BFICSQ26otnQ3d12Q26poQ3dLVIQ26psQ3d54QQ_trksidZp3907Q2em263QQcategoryZ33630QQitemZ370261494021

[anothernord]

None of the hangers will work; they all have to be relocated. The midpipe is too short by ~6 inches. But, if you attaching it to a DP, it could like up differently.

[Huffer]

Read some more threads and go custom.