Ho kay.
another way to fix the leak is to heat up the split muffler spigot area with a torch and gently hammer the area to decrease it's diameter and reclamp it.
Sometimes it is easier/better to remove the muffler and put a piece of pipe in your vise and heat and hammer the muffler spigot shrinking it smaller on the pipe.
That way you don't take the chance of damaging an already old/rusted weak nipple in the head, opening a ball of worms to replace it.
Sometimes one gets lucky and uses a new clamp,if old one is weak/damaged, tightening it cold then heating it up by running/working the engine, and several times keep tightening the clamp.
works well if you have no access to a torch or don't want to shrink the muffler spigot over a pipe.
---Exhaust leaks are annoying
