You can listen to Dwight. There is a seller on ebay "sleddead" that sells "Dunstall replicas" that will fit our bikes. They remind me of the good ole days. I used to put Dunstall reverse cones on all my twins. They give you a very deep note, but not loud at all - just a growl (unless you remove the baffles, then they really crack).
There are Dunstall relicas that won't fit our bikes, but sleddead assured me these will fit. Click the link to view the listing.
They are about $135 a pair.


Ride Safe, Dennis Triumph, it's how I live and what I ride.