I don't know if anybody has any use for this. This exhaust was on my 01 ls1 Bird. From what I was told it was custom. y-pipe back is 3 inch, into a single in Flowmaster with a 3 inch single outlet. Looks like a stock v-6 style just bigger tubing. It really sounded good but I just like the look of the dual outlet. If anybody wants it let me know. PM me for Pics. John

The single in, single out will often flow better than the dual out (and more flow often equals more hp). A stream of gas moving at high velocity does not like to change directions (to make the "U" turn to exit the passengers side pipe) so it loses energy while doing so. Many of the 3rd adn 4th gen F-bodies only smoke from the drivers pipe when idling (lots of 3rd gens are this way, the 4th are less likely to do that for some reason). Because it is easier to flow straight across. Just thought I'd mention that before you dump it.