Originally Posted by themostream
.... The structure of the frame wont really allow running a drain pipe across the trailer under the sub floor without cutting cross members and you won't want to get into that.
So you could do it, but it's a bit involved.
Great advice in your reply.
As thermostream points out, it is a bit involved, but... I do want to point out that some people drill a hole in the crossmember and weld a stiffener on the frame, allowing grey tank piping to pass through frame members. That was done on mine by Colin Hyde Trailer Restorations. There are pictures of the grey tank plumbing from underneath in this thread
There is also a thread on the major restorations
, loaded with ideas.
Relocating major items is a challenge -- frame, window and electrical items always seem to get in the way. We originally thought of moving the bed aft and bath to the sides but eventually gave up on the idea.