im buying an xforce in the next couple of weeks... i can get them for $185 each i think for most of their muffler range if you're interested... the only other price ive heard is $240 from castle hill exhaust centre, and they are pretty well priced as far as i know... they are pretty good sounding mufflers for the price, but i dont know about power, never experienced one... jason you still gotta take me for a drive so i know what its like... otherwise ill just buy the exhaust myself..