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My car came factory with platnium tiped plugs that are supposed to last 100k miles.... I have 80k on my car right now....

....Anyway, I am wondering, the manual says only to use AC Delco (like for everything with the car) but I wanted to get Bosch +4 platnium, becuase I heard they are very good.......and it would be a good idea to change the wires when it is time for the plugs too? Also, do high performance spark plug wires make a differnce? The 4.9 has no after market at all, and I was thinking the real good plugs and high performance wires may improve performance a little....... what do you guys recomend for plugs and wires if I want to get better performance come replacement time?
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