Dana:
DV gave me the lead and I had a custom set of mufflers made:
Lucien Donofrio
Arizona Exhaust
4009 North 39th Ave
Phoenix AZ 85019
602.415.9737 ( no web site or e-mail )
While my set were open chamber, as in deep and loud, Lucien I think will make whatever you ask for. The cost was $25/ea and $25 for S & H to CT. Quality was excellent.
Since then, a427SC, informed me of a quick release clamp for the muffler which will allow for a set of quiet and loud mufflers. Had I known of these clamps I would have used them.
www.burnsstainless.com