You can start with this thread and maybe search for some others:
http://www.airforums.com/forum...ork-23864.html
The site
Silver Avion is, strangly enough
all about Avions.
And I found the WI
Avion Travelcade Club site run by Donald Gradeless to be a wealth of info on Avion trailers. Shoot Dr. G an email and he'll more than likely be happy to answer any specific questoins or point you in the right direction.
-Bernie