Hi, I was searching the web for the same answer you were looking for. I have a Manitou FS with the rear shock you mention (I beleive it was the third and last generation shock they mounted in the bike) originally I had the "thermo like" elastomer shock, changed it for the elastomer/spring shock combo -didn´t work both of them- and again changed it for the coil spring/piggybag shock. Years ago I saw the add and found the link to the german company RESET, but I lost it in one of those nasty computer crashes. I´m now lookink to rebuild my Manitou and I´m searching for the RESET mount (or similar). Did you get to find it?
I´ll appreciate any help you can give me,
Best regards