So...Im in the middle of my engine swap and wanted to go with headers and run true duals all the way back. However, all of the exhaust shops say that they cannot replace the current exhaust (single) with duals all the way back. Is this just a Virginia thing or EVERYWHERE??? They tell me I have to put a "Y" from the headers, run through 1 cat and 1 muffler, and split after that. This sounds absolutely ridiculous, especially since Im willing to put a cat and muffler on both sides for true duals. Second, does it make sense to still use headers if I have to return to a single pipe for muffler and cat? What would / did y'all do? Thanks for your opinions and insight. This blew me away when I heard this, but then again, I dont know a great deal about these ins and outs.