Including everything in my signature and a soon to be 3.4" pulley, what spark plugs are you guys putting in your cars?

Is NGK the way to go, and if so would the Iradium 6's be a good choice?

Also, what does one need to do in order to run a 3.25" pulley successfully? And does anyone know a ballpark figure of a camshaft install? And last, if I looked into the above, would I need to go even colder on the spark plugs?

Well I tried to be straight and to the point. I keep forgetting to ask these things. Gotta take it one step at a time. Thanks again.

The NGKs are good. One heat range colder then stock.

To run a 3.25 your gonna need some headers, two heat ranges colder plugs, a 160 tstat And either a cam or rockers. The thing to do is once the 3.4 is installed get it scanned for KR. Mod till you get that as low as possible. The biggest improvement you can make to be able to run a 3.25 happily would be an IC.