Downpipe for F7R turbo

Hi guys, i currently have the janspeed/ktec/bbperformance downpipe on my 9.
I wanted to make one myself in 2,5" but don't have much time right now.

Is there any aftermarket 2,5" available or does anyone have a good one for sale?
Ultimately how much hp is recorded with this item?

With my current setup it should be possible to reach 300 but i'm afraid the downpipe will limit it...

Cheers,
Arthur

dont think there is Arthur, myself .0s84712,(aka ipswich,get in where you can):laugh: jp all made our own,or had our own made should i say, 2.5" will get you 300bhp;)

ah well, flange, flexible part, bends and pipe are ordered atm.
hope to get it finished in time, car will probably be mapped 10nov. :)