[18346]

isn't .065 greater than .0125? Must have amde a small mistake. Most exhaust is 0.065" wall thickness for ease of working with it. If you use the stainless 0.065", it should last at least 100,000 miles with no salt. If you really want it to last, get it hot dipped with ceramic.

 

[Stricken]

Yeah I meant to write .125" but I still wrote 1/8" so you got the point anyway. After spending $500 and some change on polished ceramic long tube headers for my Mustang and after 500 miles I've got rust pitting through I don't think I'll ever waste money on ceramic coating again.

 

[18209]

I think you use 1/8" on the pipes in direct contact with the manifold/header since it gets a LOT hotter than the rest of the system. Other than that, I think 1/16" will do for the rest of the system.