1998-1999 Country Coach changed the entire body, systems, motor, etc. of the Concept of old.
The "New" Concept was Country Coaches attempt of building a "FiberGlass" Prevost. 1995-6 was the end of the CC Concept with LP and wood cabinets, and 8V-92 Detroit.
The death of the Concept was the lack of slide-rooms.
CC made two 40' Concepts in 1998 and the rest were 45' long. 40' only had one bay, 45' carried two full bays.
Issues: Wiring!!! The electric's on this coach were always an issue. Interior's were lamiate and "bus like." But it used to be very hard to keep the voltage up. Forget "dry camping"
Another issue was the Front End. They weren't IFS and in 99, CC beefed up the front end system to carry the weight. Front ends might be overweight.
They had to add a "safety" release system for the electric basement bay doors, if I remember right, one of the first owner's locked their dog in the basement by mistake, and could not get the electric bays doors to open up again.
The basement doors close like a garage door (auto) and the dog jumped in at the last moment.
Great looking coach. The new Concept only lasted two years.
Hope this helps.