Re: trailer hitch
1. Needs to be boxed for sideways loads. Even pulling the trailer around a curve will cause it to deflect sideways and probably twist.
2. Rear crossmember appears to be a C-channel, which is very weak in torsion. Meaning the trailer hitch is going to cause it to twist. I'd suggest boxing it for at least 3/4 of the total length, boxing centered in the middle. In other words you could leave 6" or so open on each side to allow wiring, etc to be run inside the box. The box doesn't need to be real thick, but 3/16" would be good is my SWAG.
It all looks so clean, makes me wish for a garage.....
R.
