Ok so first off I should note that I don't think the pipe I took off my car is the stock piece. It was a catted H pipe but with only 4 cats and I didn't really find any markings. I was under the impression our cars had 6 cats. Any way, I installed an O/R x pipe by Pypes and now I have a horrible leak at the drivers side exhaust manifold. I have the nuts as tight as they will go and I reused the stock gasket on the driver side as well. The pass side is perfect as far as I could tell. I bought this pipe used I might add. On the studs coming out of the driver side manifold there is a spacer/standoff deal with some threads coming out of it that the nuts screw onto. Are these spacers supposed to be there? Is this keeping it from sealing properly? The leak is horrible. Do I need to replace the studs in the drivers side manifold with bolts? The guy didn't send me any bolts at all and it looks like they are keeping it from seating all the way but I have no idea what bolts to buy!