While warming up the car yesterday morning, I noticed clouds of exhaust coming out around the left rear wheel, well away from the tailpipe end at the left rear corner. A quick look under shows exhaust blowing out from the left end of the muffler. No telling how old it is or the rest of the system, but it looks like time to start replacing things. I don't think this car (a '72) has a catalytic converter; I can't see one, and there's no mention of one in the owners manual. Assuming that's the case, I'll need everything from the manifold back. Since the climate here is fairly mild (north Alabama, USA) and there's virtually never any salt on the roads, regular steel should be fine. Anybody know of any sources? I'd prefer a bolt-together system instead of welded; it's hard to work on welded system. A reasonably-priced header would also be handy, but isn't a necessity. Thanks, Gary