Somewhere in the 'rear view mirror sections' where they have different mirrors. It's actually a larger flexible piece originally for 'minivan/van' that they slap on the rear windshield. I cut mine into a smaller size.
Thanx. I started finding some options. It seems to be a hot RVing item . I'll do further research plus stop by at the AutoZone one of these days...
http://www.cylinderservices.net/catalog.asp?prodid=489646&showprevnext=1