Absolutely not! I have had two of them on my TJ and they both cracked, Borla's customer service was pretty much useless. Went with a banks revolver and so far it's been just fine.
Sorry just reread the op and see you said muffler, I see Borla, think header and automatically get "road rage", don't know about their mufflers but the customer service statement stands[emoji107][emoji107][emoji107]