a friend has some slp exhaust parts he's willing to sell to me for around $350. Headers w/o air, and gaskets, ypipe, muffler with tailpipes, and a pipe that goes straight from the ypipe to the rear axle (replaces cat). But somehow he's missing the pipe that goes over the rear axle. It's pretty used ofcourse, but it's still stainless. Is this a good deal? I think I'll still need to buy some bolts and minor stuff, and the over axle pipe. Or maybe I'll sell the exaust and just keep the ypipe. Not sure yet.