People are going to tell you not to get one unless its recirculating, which is a good idea so that you don't run rich. However running a hybrid 50/50 isn't too bad. GFB makes one and also Forge,Turbo XS, and APS are good ones if you want to go for a diverter valve, which will still make the sound your looking for with out the driveability issues.
Full Atomspheric will be loud but won't give any real added performance, if any thing it make give you some issues.

Nasioc will Flame the hell out of you if you post over there. Even though most of us post there, we all like the sound, but we try to stay away from getting into the loud means fast trend other brands take on.