The Denso Iridium Spark Plugs are NOT designed for the PT. Plus you need to use a custom made spark wire set and a "special spark plug socket" in order to install and remove them. Do a search and you will find out the differences between the Denso and the stock spark plugs. Then you can decide whether or not you want to go with Denso's. Believe JeffB mentioned Neon 2.0L spark plug wires "MAY" work, but that doesn't solve the problem of having to use a lathed down spark plug socket that may crack or get lost.
http://ptenthusiasts.org/PTForums/sh...=denso+iridium
IMHO, if you gap the Champion Double Platinum's or regular Champion spark plugs at .040 (the same gap that is standard on the Iridiums), you should see the same performance. Also, you can use any of the current OEM or aftermarket spark plug wires (Crane, Magnecore, LiveWires, Taylor, etc.) listed for your PT.
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