Well, here is the low down. I have my 86 GMC. It has a 305, and headers. Also, my truck used to be a 4.3L. Well, I bought 2 universal cats, and 2 turbo mufflers. Should be cool, right? WRONG.
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It is against the law to run a true dual exhaust on a vechile that was only a single, becuase of the cat situation. If the truck only had one cat, you can't have 2. None of the shops around here will touch it.
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Now, one guy would do it "after hours" for a reasonable fee, but my problem is if it would have to go in for emmisions, and they fail it for it, I will have to get another system put on it. Have to pay for it twice.
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Now they will also be willing to make a "Y" pipe after the headders, and make it a single system. But to do so, it's a little expensive. Or should I get factory manifolds and get a factory system? Also, it is technecly against the law to have a v8 in place of a v6, but they are pretty leanlent about that, at least they were with my 69. As long as the v8 passes the 6 cylinder specs. Should I get the duals, and take the chance? Should i get some $$$ together and have them make a "y" pipe and run a single system? I feel as if i am between a rock and a hard place. Any ideas? Thanks. BTW, I live in IL.