There are stainless reverse cone mufflers available that look similar. Take it to a fab shop & ask them to duplicate the triangular bracket, and weld it on.
No chrome involved.
Stainless steel reverse cone muffler. Straight thru perforated core baffle. They sound awesome on every application that we have applied them to. These are custom use mufflers. The mounting end is cut for use with a clamp. Clamp and moun
www.nichecycle.com
Or, buy a chrome universal muff, take it to the same fab shop, have them carefully cut the welds on that bracket, TIG it on to the new muff, mask off the very small heat affected areas around the welds, touch up with silver paint.
(DON'T laugh, OEM's do it on new bike systems to facilitate manufacture)
Or, use the universal mount rail to grab the triangular bracket harvested from the old one.
Chrome Reverse Cone Shorty Muffler. High quality construction and finish. Straight through perforated core non removable baffle. Overall muffler length 19". 1.75" ID Inlet - Reducer shims included to fit sizes 1 5/8", 1 1/2" and 1 3/8". Mounting clamp and bracket included. Fits on either left or...
oldbikebarn.com