Someone sent me a cut off from a Specialized Venge. I don't ever recall speaking to this person, it came unsolicited. Anyway, I was able to create a mount for the Varia that is size specific to the Venge Vias. It is available here,
http://shpws.me/SHMc
I would like to thank him for taking the time to figure out what I needed to get his mount designed.