Found One---of all things in Longmont, Co and just up the road. It is another R100RT to R100S conversion on a 1981 bike. Really nice on all of the cosmetics and so far appears to be a strong runner aside from some synchronizing needed on the Bings. Shows 24k on a working odometer but who knows. Not entirely sure I like the Corbin saddle but will give it a try before hunting down a stock unit.
Somewhat related--not going to hunt down another 911, at least for a while so I have posted my replica 930 S steering wheel and hub,(74-89), in the parts for sale forum if anyone is interested.
TG
1986 930--Sold