So how ARE you doing a trailer axle under this thing?
Tires have bushings over axle, trailing arms are same size bushings, so everything can spin seperate. Springy thing out of a clicky pen. Still prototype phase. E clips hold tires outboard side, probably needs it inboard too.
Looks about right. The coupler lower side was opened up to 5/32 for a light snap instead of a pry it off fit.
Knocked the stiffener / screw hiders off the back of the pan and threw some brass together.