"X" or "Y" Pipes
Y pipe has two inlets and one outlet
usually people make more hp w/ the X pipe setup but the torque isnt as high as w/ a Y pipe setup
the Xpipe is synonymous w/ "true duals"
sounds badass but your clearance sucks
Ypipe's usually fit much better though due to the way the undercarriage is formed for the F-bodies





