I will look for members name that did them in KY and get back to you. Message gone from him but will keep looking.
Possibly Kentucky Steve? His is an Eagle I think, but still an excellent blog to look at:http://ourbusconversion.blogspot.com/
Also look at the HWH site:http://www.hwhcorp.com/
HWH's website is crappy, but has lots of information on different slide mechanisms if you look hard enough. Which is not to say that you have to buy an off-the-shelf system - there's nothing in any of them that a decent fabricator can't make for themselves. And bear in mind that the slide mechanism itself is only one aspect - the structural work and sealing arrangements are a biggest part of the job in my opinion.