MBRP 2.5" In / 2.5"Out Muffler
This is from the MBRP Jk Off-Road System. This muffler is stainless and has 2.5" inlet and outlet. The muffler chamber is ~15" long and the total length is ~21". It was mounted for a week and removed, ended up just going with no muffler.
$100 shipped.