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    Do I need to change the wires, rotor and disto cap when I change the spark plugs...

    ...on my '98 Volvo S70? Any other advice for a first-time spark plug changer? I know enough to chg them one at a time and use Volvo plugs with correct gap. Or could I use a Bosch set of Platinum 4+ or the like? Suggestions... and thanks.