[SuperArc]

I have a 5000 pound rated open car trailer. The coupler no longer closes and need to replace the a frame. Does anyone have experience with this?

I am going to cut old one off with angle grinder then grind smooth. I have a miller 140. Do u think this is strong enough to weld this on? I have no checked the thickness yet of the a frame. If not I'm going to put a few good tacks with the 140 just to trailer it to friends shop down the block with no weight on it to weld it up with the big welder.

Thanks

If you have to ask a question like this, seek a professional welder that has tons of experience welding this CRITICAL project.