I just purchased a 2007 FX4 Screwed Truck. I am getting the bed sprayed this Friday but I want a good exhaust. I have seen nothing but great reviews about MagnaFlow's. So my question is I want to do it the cheapest way. I'm gonna purchase the cats and exhaust tips online and then have a shop weld it on. So does anybody know what size of cat to purchase? I think I'm looking at the 2.5" but I also have no crawled under the truck to see how it lays out. I want duals as well.

Thanks guys

 

Save yourself the hastle, buy the catback Banks kit, I love mine