skyhook
, what options do you have, an overhead crane would be ideal, next would be a forklift, prep the bus, cut the hole in the nroof and brace it for the construction process, gut the vw including all windows and rough trim to fit the bus roof (make cardboard templates of the roof) install some liteweight cross bracing in the vw body to prevent distortion, hopefully you have access to a pieceof equipment that can lift the vw from overhead with straps thru the windows, another option would be to roundup your buddies and muscle the body up, first onto some staging and then onto the bus, make a plan where safety first is the primary goal and then follow it.