I have drawn this up 3 or 4 times and each time I added something only to remove it.[ the whole point is to be light weight.]
I think I have settled on a 2x2 14 ga square tubing frame With full width cross members under the front and back walls. The frame will be wider than the HF frames setting the wheels out farther toward the outside walls. That should make it more stable going down the road.
I'm thinking of welding the spring hangers to a angle , So that I can move it easily and to stiffen the frame at that point. The angles will be bolted to the frame once I'm sure of the exact location. I'm also thinking of adding a plate in each corner for the stabilizer jack stands to rest on.
I know this is worthless with out a pic. I used to post my pic's to Photobucket and move them here from there but I no longer use them . Any idea of a better way? DR