I was thinking the other day about the Brooklands and others that have actually broken off at the muffler.
What if you took a 1" or 2" long piece of polished stainless tubing the next size up from the pipe O/D and slide it up over the pipe forward, of course after cleaning up and weld left on the pipe or front of the muffler.
Not weld the short piece up to the muffler and then weld the short piece onto the pipe.
In my mind this may be a bit better than just welding the pipe back onto the muffler.
A cracked pipe at the muffler would need to be cut off to do this procedure. But again, I think it would be stronger than the header welded directly to the muffler.
If you were starting from screw, having muffler stubs and pipes sliding over/into each other and using nice stainless clamps would be the best solution in my mind.
