Appreciate the perspective. It is a friend, builds fences, giving me the scrap rate on a few sticks.
I talked to another fellow he has 2x3 and 4x3 square nearby. I think that will be an easier route.
even on a small tractor...one of the first considerations when designing a loader is the SUB FRAME...!
A decent fabricator should not have too much trouble adding angle plates to pipe where flat mounting points are required...
Good luck and be sure to take lots of pictures...