Some of the B7's have dechromed exhaust tips I think!
Standard as they come, they're just not sooty like the pic you've just posted.
Yeh sorry, I meant dechromed as in dark rather than shiny
They look like they stick out a bit more than the B7. Could just be the angle of the pictures though . I think something similar would look good on a B6 Avant!
Should just be able to cut the tips and weld them on, would personally prefer RS6/RS4 but each to there own.
People generally just cut and weld bigger shinier tips, people also often do this to replace down turned exhausts but as I say it's just personal preference really, think it would be hard push finding pictures of b6's with downward facing tips though.
If you haven't already got the opening for the exhausts it would be a case of changing the rear valance as well as modifying the exhaust to have two exits which would be a fair bit of cash not to mention a pain in the backside. Would just opt for a bigger turbo back/cat back with a hidden downwards tip for performance purposes if that's the case, plus it would contain the smoke issue.
It might be worth trying to pick up the whole back boxes from a B7 TDi, I'm only surmising but it looks like the B7 tips are mounted differently on the box compared to the B6 tips. If you look at the B6 downward tips they sit a lot lower in the valance than the B7 downward tips do. If you cast your mind back to how my standard downswept tips looked when I fitted the twin exit valance, before the new tips were welded on you'll see what I mean.
Would personally say go to a local exhaust place and get them to make up a 2.5 inch pipe as lots of the ones sold are either the wrong fit or a very bad fit, there's lots of horror stories about even the most reputable companies. Turbo back is from the turbo backwards with no cat (only issue is if your tester NEEDS to see a cat, plus it may cause boost spikes), or cat back which is from the cat backwards.