Hey Guys I recently bought a BFii XR6T ute and am looking to put a Herrod cat back stainless exhaust system on it, but because I'm only new to this whole game I have a couple of questions, so be nice haha. How easy is it to put on myself? Do I need a tune once it's on? what sort of difference will it make, I.e. noise, kw etc? and are there other brands that are good that I should consider?