I just had a Spintech dual in dual out put on my 01 V10. I had a local shop bend up two 2 & 1/2 inch pipes that come straight out the rear. Sounds excellent! (For a V10) Anyways, when I was at the shop picking up the truck, the Snap On tool salesman showed up with a delivery for the owner. We got to talking and he told me he had a V10 too. He had just put a Gibson system on his truck. He said he wasn't all that happy. Well, when he heard mine he really wasn't happy! He wanted to know all about Spintech and where to get them. I guess I made the right choice. (For once) Just thought I would let you guys know.