[Richard Hudgins]

Told you so..............

Stainless is a waste of time and money for the application. Aluminum cannot be used due to temperature.

Mild steel is the choice.

Ceramic coating lasts a very long time and is maintenance free in my experience with it.

The thing to pay attention to is the length of the actual muffler section. The longer you can make it the quieter it will be. (Relatively speaking of course.)

The cost of the sidepipes is actually quite low and I recommend one for road use and another for track use.

But per your post about Laguna you may wish to just have the street pipes as Laguna has a pretty low DB limit and race pipes might not make it past the noise cops.