Hello, I have a goodwin-racing exhaust for sale, the Super Q model. I just bought it this year, 2020 and had it on my 2018 Miata ND for maybe 50 miles. It's a bit too quiet for me as I like more burble from my exhaust - sound is very subjective and you don't really know until you buy it lol.
Exhaust is in MINT condition, paid close to $600 for it, asking $350 Or best offer. I can deliver within NJ as well. Feel free to email, Travisaweiss@gmail.com
I also bought a lighter battery and am happy to throw in the original the car came with into this deal.