quick subframe connectors question

TrailBeast said
When I did mine I drilled 2 - 1/2in holes only in the sides of the connectors so where it slid over the rear subframe I could weld in the holes to the subframe.
(Plug welds)
I always intended to go back and taper the ends down and weld that to the subframe but never did.
The red line shows where they are welded up closed to the outside elements, so dirt or moisture doesn't get inside the tubes.

View attachment 1715513417

that is exactly what i intend to do
the plans i found show a little piece folded over and welded in, right where your red line is

i just didnt really want to drill the plug weld holes since i only have a battery powered drill, and the steel is 1/8 inch thick :)

(im still not even sure it will fit over the rear frame rails as thick as the walls are, but we will see)