i have a 79 Cheyenne originally a I-6 but had a crate good wrench 350 installed in 94, what exhaust setup can I run and still squeeze by our not so awesome Cali smog rules? Looks like an 8th grader welded this exhaust setup and the pipe gets reduced twice I believe or once I can't remember, after the cat down to 2" single outlet and the cat outlet looks considerably larger, can I remove this converter and run the same size from cat to muffler? Should I get a muffler with single inlet dual outlet? I'm not sure if it's required for some reason. And I'm pretty sure I can't put true duals on