anyone running the turboxs stealthback with either a stromung or prodrive 2.5 inch axleback? i heard the prodrive and its nice and quiet, im running the stromung axle back right now, anyone running the stealthback and stromung axle back? how loud is it? does it increase both low-midrange power and highend? lemme know, convince me to get a turboxs stealthback. i will end up doing a cobb stage 2 in the future. thanx guys