Re: Seat upgrade question
I don't know how many seats you want or which way you are going to place them, but if i wanted seat belts and a bit more comfortable bench seat, i would get a van seat that has the belts attached to it, and modify the bottom to fit the bus floor for mounting. Seat belts with the proper backing plates and washers can be mounted in a bus with some drilling.
Jesus Christ... Conversion in progress.