Okay, here's the deal... This Spring, I am putting in a new 350 GM crate. I currently have a 305 using a Y-pipe, single original factory cat with single-in, single-out into a cheap muffler single-in, dual-out that then exists the side behind the driver's side tire. When I do the new 350, I would like to do dual exhaust exiting the rear or at least one on each side. I was originally planning on true duals... headers...cat...muffler...tips for each side. I have to have the cats since I need to remain street legal. If I had a single cat from the factory, can I legally go with dual cats? Is it even worth the expense? Would I be better to go with headers...a new Y-pipe and single cat (with larger input/output than factory? If I go that route, should I split coming out of the cat and go through dual mufflers and exit? The emgine I put in will not be performance, but a good, solid, reliable GM 350. I am planning on using TES headers. I want good sounding exhaust that will also not hinder any HP I may be able to squeak out of the engine. I need to keep legal and I don't want to break the bank. I don't mind spending money to do it right the first time, but I also don't want to spend $1,000 on my exhaust system. Who can help me? Brian Check out <a target="_blank" href=http://tx85gmcguy.alloffroad.com>My Jimmy</a> with all her projects!