Yes it's the same piece, I was test fitting it, and then marking where I needed to drill the hole for the kmember nut. And absolutely, I always drill the starts and ends of stress cracks, all it actually does is prevent it from spreading during the welding process. Added bonus is they are additional plug welds! The rear of the tube extends into the frame about an additional 1/2 an inch too, so even if the cracks come back, it will still be safe. Nothing can move!
