Hi Larry. The thing about slides is, if you have a Bus that was enginered to have two large openings in the side of the Bus and not have structural failure, you would be right in purchasing a Prevost with Slides.
When a manufacturer alters the skeletal structure to create two large openings, they have in effect voided the engineering .

Now if Country Coach has endorsement from Prevost , and engineering drawings or specs ,then you are on a more sure basis to evaluate the Bus.

The Slide engineering which Prevost has developed belongs to Prevost. It sounds like what the Country Coach has is not Prevost,and is not Country Coach but a third Manufacturer.
Can CC stand behind not only the work they did but also the integrity of the Prevost frame?
Finally, the value of these Buses ( retro slides)has shown to be a negative in terms of resale. Gary