clokey,
For a stock system replacement the MBRP is hard to beat as it has a down piep that expands to 4.0 inches at 20 inches from the turbo for MAX flow, everyone else does it at the cat connection area. If you want stacks they have them too, more money than some but the underbody kit is stainless and the stacks themselves are polished 304 stainless like a tip!! No rocks chips that start to rust like chrome can etc. If you have any questions call us!!
Mark @ DPPI