The trailer that comes in the kit..
I have a few of these too..
Lotsa mods here.. moved axle back so it isn’t rear heavy, added fenders and lights, better wheels and tires. Also created hollow beam axle to hide the wire one! Big issue is that the whole idea of a hitch is backwards.. a peg on the tongue instead of a receiver and a hole in the hitch provided! Had to totally redo that!