Some more notes:
The Bosch plug is W3DP0, ending in zero, not the letter O
R0ckAut0 page for W3DP0, it's non-resistor
Somewhat related quote from Mangecor: "On production vehicles used exclusively on the street in standard tune, often the vehicle manufacturer's original spark plugs are a good choice, except where a double platinum version is available — which is a better choice. Always use resistor spark plugs if the vehicle manufacturer specifies them, as the resistance is there to not only to help reduce RFI, but also to extend the life of spark plugs by reducing tip erosion."