[KobraKarl]

Tom,

I'm going to step out on a limb here and say I dont think that is an original e-type arm. I just rebuilt the rear suspension in my car (bearing/seals) and had the oppourtunity to examine mine very closely. Three thing look different,

The original weld procces seemed to employ a sort of massive electro /fusion joining of the forging to the tube, this leaves about a 5/16 welded metal flange inside the tube, I could not see any sign of that in your photo.

The original also has a very regular 1/4 "wide by 1/8" high bead around the outside perimeter of the joint ,very smooth ,no bumpy bead. I could not see any sign of that either.

The break looks jagged and the bits of broken weld bead dont look like what I have.

Tom, I certainly am no expert, but they do look different.

Kk