Re: Tailgate build pics/how-to?
probably the most important thing would be to get the bus level/plumb from side to side befoer you start to cut it open so that it will be easy to keep the opening square while adding structure for the doorframe. look at some semi trailers and truck boxes for ideas on how to frame the back end of the bus. if you are going to lower the floor or do any other major structural mods, install temporary x bracing inside until the door frame is structurally sound. the required effort up front will save you much time and effort in getting to the final result.