The only place I could find that insures skoolies is GMAC. This is how I went about it, mind you it's not the only way, but just the way I did it and it worked for me.
I first got an estimate for the vehicle I was looking at. This was for non-commercial bus insurance since obviously it hadn't been converted yet. I was very honest with them and up front about what I needed. When I picked up the bus from the bus company, I simply called GMAC and gave them the estimate number along with the VIN of the bus and activated the insurance on the spot with a credit card. They faxed my proof of insurance to the bus company, and I was on the road within 10 minutes fully insured and on my way to the DMV for registration.
Now this worked for me, but then I also have a CDL with passenger and airbrake endorsements so I can legally drive it without having to get it registered as a motorhome.
I hope this helps.
'91 Thomas/Ford B700 7.8L Diesel 5-speed (seats removed)
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