I have a 98 D with the 5.2 and 110,000 on it. I'm wondering what plugs would be best for me. I put in the Bosch Platinum 2 plugs about 25,000 ago, and they're smooth, but would like to try something else, just for the heck of it any suggestions? I know the autolite was talked about before, which ones of the autolite series is the better ones (they have a couple) also Is there a certain brand cap and rotor to go with. I know Autozone has the valucraft and the duralast. Will a better cap and rotor give me any performance? Thanks