FS: FM High Flow Cat (1.8L / 2.5")
 

I could have sworn I sold this on here a long time ago, but I just found it cleaning out some stuff from my old job. I haven't used it since the turbo went on, so it has been sitting on a shelf for 2 years. It saw about 18 months of use. No clue on mileage, but I passed the sniffer the last time I had to get tested with it. Originally purchased from Flyin Miata, I think it is actually a CatCo product with FM markup. The rust on the bottom is surface rust, a good wire brushing should clean it up. The fuzz on the core in the second picture are spider webs, the core is not melted or clogged. It is 2.5" IN/2.5" OUT, not 2.25" like some cats. Retail is around $200. Asking $100 shipped to the lower 48.

$100 shipped to your door in the lower 48.

whats the difference between the 1.8 and 1.6 cat length/dimensions?