If you goto a longlife exhaust dealer they will build you a system, that can be stock or a little more noisey. I have a longlife rear box only on the 940, idle is a little more throaty but barely noticeable.
If you want a bit more noisey, you can go for a 2 box straight through system. It will idle very throaty but not be a screamer at high rpms. Definately louder than stock but not excessive. I have this in my B230FT powered 360, its the quietest car on the track.
Its very hard to get anything inbetween without alot of experimentation. Longlife do stock systems and powerflow do straight through. I found the powerflow designer/fitter here didn't understand the difference between properly silenced and straight through. Being a welder doesn't make you an Engineer.
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