Rob... The manufacture of the sunroofs is "American Sunroof Co. ". They are supposed to have authorized installers around the country. Look in the yellow pages in your area, and see if any sunroof installers, install ASC sunroofs... One thing I didn't mention, as part of their kit, a water drain tube is installed which runs down the drivers side pillar and out the truck, should you have a leak or rain water gets in... . So far tube is clear and water free... I didn't notice the tube until I changed my pillar mount gauges one day.
good luck ... . e-mail me again when you get serious, and I'll update you on my satisfaction and performance.
Steve