I have a 2016 Heritage Softail Classic. Keeping with the "Heritage" tradition, does anyone make a between the cylinder "Trumpet" horn like used on the old Panheads ?

 

A quick Google search came up with this . You will likely have to do some modification so it fits your 2016. There were other links in this Google search.

I have a dual trumpet on my Heritage. The person that made it is no longer making them. It took me 1.5 years to locate it. I haven't seen one since.