Hey guys. I just signed up. I used to be a toyota fanatic but screw that. Im sticking with my chevy. It's a 2004 Chevy Avalanche. 2WD. As soon as I got it, I just cut the muffler right off. Idk why, im sixteen, some excuse huh? No but Im saving money savin for pipe to come out. How much would it cost to have duals come out? do I need to get a y pipe welded onto it? im sorry if this is a stupid question. And I wanted to lift it. Can I can buy adjustable shocks? Like the Pro Comp MX-6's? 2.5 inch up front and I can put and add a leaf in the back to level it out.