These normally sell for 550.00 , again they are brand new never used with extra clamp not normally provided to easily connect to 3in aftermarket exhaust.
Correct velocity, will not connect to stock exhaust without welding but because of its extra length cutting the bottleneck off of most 3 inch aftermarket full exhausts as I did works and is why I includ 3 inch clamp that'snot included from factory, yes I still have a few I came across. Sorry...