Originally Posted by icky
Use 409 or 430, it really doesnt matter because it's SH!!#y SS and is going to crack anyways.
That's a half assed comment. What makes it ****ty? It's corrosion resistant, used in the vast majority of OEM exhaust systems, easy to weld, easy to bend and it's relatively cheap. It met the durability requirements for Subaru in this application. OEM's use it on almost everything except when they need more corrosion resistance or heat resistance and they move upto 439 or 441.