If you want to go deaf and hate other humans you could always run the header with just a pipe and a resonator...no mufflers. [/quote]

Guaranteed to offend. Unmuffled NAs are so loud. [/quote]

I once heard an NA with that kind of setup and MAN was it loud![/quote]

i had that for a while, then put the mufflers on, and i think its still way too damn loud. Hurts my ears @ WOT.[/quote]

Get earplugs.

 

Go with the "road race" header ($134 from RB), get the correct flange ($12 from RB), and this collector ($46 from RB)







Then if you get bored of your set up, you can go dual with it for a little more $.

 

I would get a BONZ Pipe from RX7.com. They are cheap... will do pretty much what you want and give you a little more SOUND (Not Noise, like other systems). You can keep your cats and put them back yearly or bi-yearly to pass emissions testing.



Anything less than a header, presilencers and 2 mufflers will be too loud for the street. I tried to do a single muffler and it sounded like a race car. 2 mufflers are just right, It gets loud above 4,000 RPM

 

muffled n/a's are loud