Where are you buying ebay/ssa s13 dual <200$ cat-backs now a days?

[chingon]

Originally Posted by Abeo

HKS themselves say it's 409.

Just checked mine; tip and muffler body is 304, rest is 409.

I couldn't find it on their website. You got a link? I think I posted here some spec sheet that said S3 (which I think is basically 409), but unlike other models, they did not differentiate between piping and muffler body.

It's good to have a decent option if this other one ends up scrapped.