Joe,
I believe you have a Santiago Chopper, or a copy of one. They are out of Florida and used the earlier version of what was to become the DNA rear axle. I think they fought with DNA over the rights. The picture below is one that I worked on in 2004 maybe. A VET bought it in Florida and brought it home to Baltimore. It had heavy fiberglass fenders and a steel 'fan mount' for the fenders. It is not a rigid but rode like one.
http://www.badassglass.us/trikefendersbodyaxle/13flattoptrikefender.html
View attachment 75851
Thanks Jim,
Sure does look similar
And they have a phone number... Yea! (wont believe the number of places that dont want to field calls - emails only)
So I will call them to ask if they have fender mounts (Only see front fender mounts in website)
Thanks again for your help!