Believe it or not, last Spring there was a used FXR2 at the local dealer with those same pipes on it. Gone now, though.
I've seen them on ebay every so often so keep looking there.
I also think they were still listed as available from Kerker as recently as about a year ago--that's when I was last shopping for pipes and *I think* that I remember seeing them. I wasn't really trying to make a note of it, though. Point is, that some dealer or shop or distributor out there somewhere probably has a set sitting on their shelf--I bet it will be on ebay one of these days.
Have you checked the big catalogs: J&P, Drag and Custom Chrome? Maybe even Dennis Kirk. Beat the heck out of the web.
RB racing sells some impressive 2-1 systems. Very different from the Kerker you're pursuing. But If I ever decide to go to a 2-1, the RB pipes would be my first choice. But....working on other projects right now so pipes will have to wait. Besides, the Vance and Hines pipes I just got are still quite new.

Welcome to the forum. You have an example of the rarest CVO bike ever produced. Nice.