Not difficult. I couldn't find fittings so I cut the line and double clamped the hoses. About 1 ounce leaked out when I cut the lines. So have a small pan ready. Got my cooler from the link below. Nice stacked plate job, about 18,000gvw.
http://www.oemfordparts.com
Mounted it driver's side about 2 inches in front of AC condensor and bottom edge on a line about 2" below where the grill bottom starts. Mounted with metal strips bolted 3 places to the metal framing that is between the condensor and the grill.
Good Luck!
Remember to get the hoses tight.