LCA repair options...

Yeah it depends on how everything lined up when you welded them on. You can lose the outer edge of the stiffening plate though, especially since you'll be pulling the LCA together with the clamp. So you can be a little more aggressive grinding the edge of the plate.

When I was adding the stiffening plates to my LCA's I noticed that while the stiffening plate helps tremendously to hold the tolerance on the pivot arm, it does still allow some spread there. You can check it pretty easily with just a clamp, even with the plates welded in place it doesn't take much clamping force on the LCA ends to bind the pivot arm, and of course the reverse (spread, causing play) would be true as well. I had a set of tubular LCA's on my Challenger for awhile before they broke (the CAP version, not QA1), I noticed they had the pivot arm partially caged in. So I checked the range of motion on the pivot arms, checked the clearance to the K frame and added the extra gusset to keep the LCA from spreading away from the pivot. Just make sure the pivot arm still moves freely when you're finished.