There are a couple of threads :
http://www.skoolie.net/forums/f27/bu...bus-17690.html
Ok.... Now I cannot find the second one. It is here somewhere..... The gent in that thread made a flatbed out of a full size dognose bus.
FE buses will give you the most usable floor space for a given bus length. RE buses will have a little less floor space in the same length bus and are easier to work on.