Originally Posted by joey5639
I'm sorry I'm trying to figure out what exactly that is ?
That's a plate for a spare tire mount. The 3 holes are for wheel studs and the back of the plate gets welded to tube.
AtoZ fab sells a swing out kit for around $100. You have to fab the main part, but it gives you a spindle, handle, backplate, ect.
I was going to link it but their site appears to be down at the moment.
Not sure on the wall thickness on the trailer but I'd venture to guess that you'd have to sandwich them with some plate for strength.