My oil pan gasket is leaking so while I'm there I decided to change the muffler as well. My 91 has the OEM muffler and after 21 years and 130k miles all the nuts are badly rusted. I was able to remove all six nuts, 2 bolts on one of the cats broke. So, it should be easy just to pull the muffler off, right? Wrong
. The muffler is still solidly attached to both cats. I tried banging on the muffler as I won't use it again, no luck.
Any ideas on how to remove the muffler? Also, I want to use the cat with the broken bolts, can I just get two new bolts welded on?
Thanks!

Any ideas on how to remove the muffler? Also, I want to use the cat with the broken bolts, can I just get two new bolts welded on?
Thanks!