Have you ever heard a gear driven centri,holy ****!!!Not exactly a street setup though.

 

you mean a gear driven like a prochager or a slip gear like a rotrex.. because if you mean like a procharger.. as far as blowers go.. the bigger ones arent SUPER loud.. they do make noise though.. and a kenne bell mustang is louder the a procharged mustang lol

 

It was a procharger on a mustang,ran high 4s in the 1/8th.Still wasn't nearly as loud as a 14-71 though. As far as street Mustangs go a Kenne bell is the ****.