If you just got the muffler changed, Id say scrap it, but if you had the stock cat back replaced and have some storage place, Id say try to sell it. It was mentioned before, Someone might need a stock catback to put on their truck for resale.

I replaced my whole exhaust on my mustang, and some dude actually paid me pretty nice for my stock manifolds, hpipe and mufflers.

Give it a week, if no replies, then scrap it.

 

Yeah, recycle it and get some lunch or gas money. Better than letting the store make that money off you.

 

how much do you want for it

 

Exactly. The shop is already making money off of you with their product markup, why let them make even more buy scraping your old muffler.

 

it wont hurt to keep it if something ever happens to the magnaflow. i have ripped off mufflers offroad before.. but it was a big *** gibson