Look in the forum want ads/for sale parts. CaptainKyle
[email protected] or Sean Morley
[email protected] may have good used ones. 1986-2007 should be the same, except for finish where some were black instead of chrome.
The 1985 didn't meet EPA regulations and I believe the headers may be a different size. Sean Morley or CaptainKyle will probably chime in on that. Since the front headers are twin-walled, the I.D. may be where the change is, while the outside chrome tube in front may be the same. Not sure about the rear cylinders' header pipes' difference in diameter, if there is one.
Marving makes a replacement megaphone, but you need to contact them to see if it fits OEM header pipes. It has a balance tube instead of the highly-engineered factory exhaust chamber/resonator which is part of the OEM megaphones 1-piece exhaust part.
http://www.exactrep.com/acatalog/-M...p-on-Chrome--BS-street-legal-.-25.html#SID=23
View attachment 96747
Email exactrep for pricing/shipment info.