The swap box will not work. A/C will be too much work, expense and drag, as said. Wrong truck and motor for AZ summer driving. Enjoy it in the one week of winter we have. You can carry a wet towel with you if going more than 2 miles. It will dry out after that except for the sweat.
As they say here,..................."Hey, but it's a dry heat". If you live higher than the valley you may have a chance with other options.
Happy motoring.
