OK, cool. I looked at a lot of the pictures but didn't see that one. I may save the pictures in case I get fired up to build the KLR. That's a better looking differential than the Pinto that most use. Looks a lot lighter to. Are the two tabs on the frame the only mounting point for the swing arm? If so, I'd be a little concerned about the twisting force (the leverage from the rear wheels) from cornering. Otherwise it's a nice clean job of fabrication.
Dwight