and would you after market, like sierra would be fine? and do you need to glue on gimbal ring side or just hose clamp?
Tube I belive is bigger diameter at the end where it slips over bellhousing exhaust tube, so I don't think cutting bellows will work, and yes you don't 'need' anything on the exhaust as it's full of water when stopped. It will be louder with a tube, and even more loud with out anything
I mean, you probably don't have to cut it at all and it will redirect some of the exhaust to where it needs to go. But it will still be louder than a tube, and is a pretty half-assed kludge, even by the standards of this site...
And the exhaust tube still attaches to the bellhousing, not the drive. I mean, for $30 and 5 minutes to install, why not just get the tube? You can put everything else back together and put the tube on whenever.