If you install it yourself, count on a FULL day to get it done. Backside is easier than the front, but doesn't help as much. Front side involves draining (and replacing) the radiator and radiator hoses, installing an air-dam behind the radiator, as well as some rubber and foam pieces that manage air flow over around the front cylinder.
The backside involves a small amount of wiring, but all the pieces come with connectors so it's no big deal. Then, removing/replacing a few screws to install the "hair dryer" and the duct that pulls air across the rear header and blows it downward on the left side.
Well worth the effort.
2010 Vulcan Voyager /Ooops - I totaled it!/