You can stack daystars on top, but you will not clear a 38" tire that wide with 7" of lift. I would reccomend a 5" skyjacer or 5" bds bolt on kit and a body lift. With the fabtech you have to cut off the factory lower arm mounts meaning the truck is stuck with the lift kit. The 5" BDS and 5" skyjacker bolt on and they can be run with 2" spacers on top as well.