it is a pain in the a to remove the top . you have to take all of the trim off on the interior around the cap to body to get to the bolts that hold it on. well any way here are the exact instructions from my manual.
Caution:the tailgate window must always remain closed to prevent breakage whe the roof is removed.
1 lower tailgate window to the fulldown positionand lower the tailgate
2 remove the screws attaching the trim molding and remove the plastic trim from around the side window openings and the cab opening to gain access to the roof retaining bolts.
3 Scribe the location of the molding brackets on the fiberglass roof's surface and number each bracket as it is removed for reinstallation in their original positions.
4 Remove all the roof retaining bolts and molding brackets.
5 With the help of several assistants , carefully lift the roof offf the vehicle to prevent tearing or separating the weatherstrip from the fiberglass roof. note the roof wieghs about 120 pounds.
6 To prevent deformation of the roof and weatherstrip, store the roof right side up on a level surface at least six inches above the ground.
7 Installation is the reverse of removal.
good luck