Tom, as you know we have a truck based motorhome (Freightliner). What you want to do is very feasible and I would recommend that you look at Transport Designs, Inc. web site and see what they have done for the type of rig you are talking about. http://www.transportdesigns.com/
Disclaimer: I have no financial interest in the company; I'm just a very satisfied customer.
Before we went with a truck conversion, we had a wonderful GM4104 for 16 years (1985 - 2001). She was absolutely trouble free in the over 150,000 miles we put on her; including five or six transcontinental trips from California to the Maritime Provinces. We only sold her because we wanted something newer with more power and more gears to get us over the mountains. Not wanting to spend the money for a new bus shell and doing another conversion at my age (now 69), we went with a truck conversion.
We visited several truck conversion companies and looked at their shop facilities before we decided on Transport Designs, Inc. They used quality components, had a small shop with dedicated employees and would build it the way we wanted it!
We spec'ed out the truck at our local Freightliner dealer in Bakersfield (sorry, Tom I didn't know you then!). As Tom knows, this was an all day job in getting everything we wanted on the truck.
2001 Custom Motorhome
Chassis & Cab: Freightliner FL70 Engine: Caterpillar 3126B 300 HP & 860 Lb.-Ft. Torque
Transmission: Eaton-Fuller 6-speed Manual Overdrive
Rear Suspension: 19,000 Lb. Air-Ride, Front Suspension:10,000 Lb. Leaf Spring,
271 Wheelbase with 128 Rear Overhang 15 x 5 Front Air Brakes 16.5 x 7 Rear Air Brakes Bendix Air Dryer
3.91 Rear Axle Ratio 22.5 x 8.25 Aluminum Wheels with Michelin 255/80R 22.5 14 ply Tires
Two 45 Gallon Fuel Tanks Fuel Separator with Heater
Air-Ride Cab Crawl-Through opening in back of cab Air-Ride Driver & Passenger Seats w/arm rests
Remote Controlled & Heated Mirrors Power Windows Power Door Locks Cruise Control Air Conditioner Air Horn
Variable Speed Windshield Wipers Tilt & Telescoping Steering Wheel Dome/Reading Lights
Gauges: Speedometer Tachometer Hour Meter Primary Air Secondary Air Suspension Air
Water Temperature Transmission Temperature Oil Pressure Fuel Voltmeter Low Air Pressure Warning
Turbo Boost Exhaust Gas Temperature
Stereo Radio with CD player CB Radio with Weather Bands Fire Extinguisher Flare Kit
MPH/RPM: 55/1500 60/1625 70/1900 80/2200 Top Speed: 87.8 mph (governed)
Motorhome Conversion: Transport Designs, Montoursville, PA
Overall Length of Motorhome : 37-9 Overall Width: 8-6 Overall Height: 11-9
Length of Motorhome Box: 27-0 inside + cab-over portion Inside Height: 7-0
Aluminum Tubing Frame: 16 on-center, all welded. Exterior Walls: 0.050 Aluminum, Riveted 4 on-centers.
Roof 0.040 one piece Aluminum Floor: 3/4 Interior Walls: 3/8 Solid Oak Cabinets
Insulation: Walls: 1-1/2 Polystyrene Roof: 3 Polystyrene w/ 1 dead air space top/ bottom Floor: 2Polystyrene
8KW PowerTech Kubota Diesel Generator 2500watt Trace Sine-Wave Inverter 240 watts Solar Panels
120 gal. Fresh Water 115 gal. Gray Water 48 gal. Black Water Two Penguin 13,500 BTU Air Conditioners
Walk-Around Queen Size Bed Full Size Shower Porcelain Toilet
Fully Loaded Weight = 25,000 lb.
To see what our rig looks like, go to our website: http://www.thegooddeeds.com/TouringTheUSAandCanada.html
Tom, with what you have done with your bus, this would be a "peice of cake" for you!