You know the Skoolie scene probably predates the bus conversion busnts. We all have clear images of the school buses all painted up in psychidelic colors and peace signs in the 60's. Bus conversions crowd did not getting momentum until the 80-90's, a decade two or later. And it is far stronger today than OTR conversions. May need to reconsider there may be some real secret sauce they dole out when you buy a yellow bus!
You'd think so, but Custom Coach began converting coaches long before the 80-90s. They were working with Flxible decades before that. Coach conversion owners were some of the founding members of FMCA, and I believe that their logo is based on a Flxible conversion.Seems to me that school bus conversions and coach conversions came up side by side, not one after the other.
BlueBird has been building conversions since the 60's on school bus chassis .BlueBird and Crown both built OTR buses too
Looks like the MCI DL-3 is the most popular bus to convert for the DYI crowd,there were so many made and are still in production and parts are everywhere for 1 it is the workhorse of the American highways simple and easy to work on, and a choice of engines and drive trains
https://en.wikipedia.org/wiki/Family_Motor_Coach_Association