As for the Edge w/ monitor all that comes with it is the thermal couple, module with plug in harness and the monitor with the lead that plugs into the module. What you might want to consider getting is the aftermarket pillar mount that the monitor just clips into. If the unit is made for that year model it will work on any Lb7 made in that time era. They are simple to hook up however they have had issues in the past where they get too hot under the hood in the summer and tend to mess up the programming. Just have to keep in mind when you mount it to keep it where fresh air is flowing through like on the distirbution box. There are some also on this site in the want to sell section for cheap.
03 Chevy Silverado 2500 HD, K/N intake, PPE boost fooler, Edge hot juice w/monitor, 4" MBRP turbo back exhaust, Line X bed lining, B/W turnover hitch, Merchant Automotive xfer case pump upgrade