Buck1,
If you do a cat back system it won't require any Sticks or blocker plates. If you want the MAX EGT drop though you need the front pipe that eliminates the cat. You can get the plate/stick and it'll work fine! If you have any questions on it call us we have all the AFE and MBRP exhaust systems and will be glad to help you with any info etc.
Mark @ DPPI