Sngle /0----\ to Twin Pipe/0---0\ Conversion??

[Woorlord]

Normally trawl the A4-B6 forums but I have been asked by a mate to investigate if possible to replace his 180bhp TT-8N single pipe exhaust with a twin pipe version?

Is it a simple case of changing the backbox - and of course the bumper lower spoiler, etc. or does it require a full exhaust replacement perhaps back from the CAT?
Would it be cheaper to go for a perfoemance exhaust - say Miltek??

Can anybody advise or could point us in the right direction if already covered on previous threads.

Thanks.

 

[T3RBO]

If the 180 is also quattro then the standard 225 exhaust will fit, but will need a sleeve made up to connect to the cat