When I was a kid we converted a 1956 chevy school bus. Used it for several years and pulled a old 19 ft Chris Craft.
Eddie 03 Fleetwood Pride, 36-5L 04 Ford F-250 Superduty 15K Pullrite Superglide Old coach 04 Pace Arrow 37C with brakes sometimes. Owner- The Toy Shop- Auto Restoration and Customs 32 years. Retired by a stroke! We love 56 T-Birds
There are a ton of sites dedicated to bus conversions(skoolies). I have sat for hours browsing them. Some of them are really amazing and some are....well lets just say not so amazing. They are cool though.