I am considering installing a Magnaflow cat back exhaust in my 00 w 4.8L. (I am still debating between the singe vs dual exhaust.) Considering the $690+ price just for the system I am wondering how difficult it would be to install it myself. I have a level concrete driveway, 3 ton jack and 4 jack-stands., a 122 piece Craftsman 1/4-Inch, 3/8-Inch, 1/2-Inch mechanic tool set with both metric and standard sockets. I also have an Ingersall-Rand impact wrench and ratchet set (caught a sale at Lowe's I could not pass on). Has anyone installed a cat back system themselves and how difficult was it?