I was wanting to know if anybody has put on the 40 series flowmasters I see a few peopel with them in there sigs. Would it be better to get 2 of them and weld them in to the place of the stock mufflers or to get a diffrent brand of cat back system. I am looking to spend around 350 installed. I know a cat back is like 4 bolts to hput them on. The guy at the local shop said it was 100 bucks to put them on. that is for a cat back system. I did not think they were that hard to put on. is he trying to screw me over? what woudl sound good for that price range? I am looking for somethign that will kinda scare peopel but not be that really loud over doing it sound. if you know what i mean. thanks in advance.