So I went to a friends shop over the weekend, and we knocked out phase 1 of the tire swing out.
Used 2"x2"x.0.125 sq tube, and 0.250" plate gussets.
The A to Z Fab chromoly Mega spindle works amazing. I upgraded the generic dust cap with a Haul Master chrome spring loaded grease cap with rubber cover. That's one HD dust cap! The mega spindle is thicker & longer, then the regular. I had to cut off about 3" of it. The 3/8" corner tube gusset worked as planned. Plasma torched a hole in it, and cleaned it up with a bur bit. Spindle fit right in, and a nice weld all around the spindle. One last bead to the top above the bumper plate, and it ain't going anywhere.
The Ruffstuff spring loaded locking pin works great. It was a tight fit between the spindle and the tail light, but it clears it and the hatch too. Two locking holes in the bumper. One when closed, one when opened at a 45*. It is stainless, and lost it's shine when welded on. Lift, turn 45* and it locks open. The spring is stout. I can pull it up, move the carrier out a little, release the pin, and it will side across the bumper and drop into the holes on it's own. Because of this, I didn't add a stop on the outside of the spindle. Might still do it, not sure yet.
The Ruffstuff latch is a huge disappointment. It is going back. It simply doesn't work right. There is no cam to break over, and not even a way to use a lock pin when closed. Terrible design. Worst part, is they charge 3-4 times as much as others for it. SMH
So the A to Z spindle kit comes with a weld it DIY lock, and it is a sturdy solid noise free application. It just didn't work out for this build. Shame too, because it is super nice.
So instead, we welded a 3/8" tab to the bumper top, and drilled a hole thru it, and the bumper. Drilled out and welded in a round tube inside the 2" sq tube. Drop in a 3/4" farm hitch to hold in place, with a 1/4" clevis pin to secure it. Solid, tight, and zero play in the swing out. Couldn't be happier how it turned out.
The 3/8" plate with a bunch of predrilled holes for assorted lug patterns worked, but I need to re-do it at some point. Somehow it came out a tad crooked. I think I will use the lug half of a wheel bearing Hub instead. I will save that for phase 2, when the Jerry can holder, the hi lift, and the max tracks brackets are added.
Got it cleaned up & painted, after work tonight.