I know some have swapped out the tier 4 muffler setup for a I think a Stanley muffler. Well, I thought I would see what a 2515 muffler would cost as an alternative to this approach on a 3515 for a what if scenario.... Well that was a short lived thought as the muffler for 2515 is ~$1,200! Does that strike anybody as a bit high, heck I have seen other manufacturer's listed at couple of hundred dollars....