flowmaster exaust ?'s

Aight, I got a 94 blazer sport, with a 350 5.7 v-8 aka K5 blazer. Looking into buying a flowmaster american thunder exaust system. First I would like to know how much it costs to install a exaust system and where to take it. I would install it my self, but I dont have the automotive knowledge like I am sure some of you do. And as far as purchasing the product, what would give me the lowest price?

Cover your butt 2 1/2s are very tite if that is what thay are and putting money in to it ones is still chepper than twise been there ask around alot before you make that move $$$$$$$