I had a friend urn some tips for my SS long cannons. Didin't change the sound but added 2 inches tot eh length and are 1/4 inch wall thickness.
a picture should show here.
[img]http://www.bonnevilleamerica.com/photopost/data//500/thumbs/2609chain_adjst_-_pipe_tip_-_[/img]
Gary

If your ship doesn't come in - swim out to it ! Nothing but Triumph -'05 Speedmaster - Ride with the NorCal Presidents