When I looked @ them it was sold all in one kit, I found this out since I was actually looking for the rubber bushings.
The only pieces that you might have to reuse are the screws and that's not really a problem
Pull your alum cover off of the tailgate and then it becomes rather self explanatory you don't have to loosen the screws holding the release handle down. There will be like 8 or 10 screws holding it down and some models had some screws from the outside too. The screws from the inside are usually t-15 torx