Hey guys I was wondering my 2008 f350 king ranch truck has normal radio with CD player it in. I would like to get Sirius radio for the truck. Do I have to buy a aftermarket setup or can I find a factory Sirius radio that ford out in these trucks and put one of them in? Also what about the navigation I saw some of these trucks have them in also. Will they interchange? Also one more question I had was ever since i installed my sct tuner I noticed my fm signal dropped and isn't as strong as it was before I put the tuner in the truck. Any ways to boost fm signal? Also why did my signal drop some by installing that?