Goldstone, I would only use Bosch w8dco plugs. They are copper and will work great. I definately would not recommend platinum. They seem to want to mess up a lot of times. The stock gap is .32 on those. I would recommend pulling one plug at a time and replacing it so that you don't accidentally get confused as to which plug wire is which. If you do this, you are probably looking at a 30 minute job max and that is checking the gap on the plugs you are installing before doing so and I would definately recommend checking the gap. Of course, do the pulling and installation should be done when the motor is cold. If you have not changed the distributor cap and rotor, it might be a good idea to put a fresh set and even inspect the wires. Hope this helps.