Spark Plugs

Is there any point using platinum plugs over copper ones except that they last longer. I mean the performance gains in spark plugs is next to nothing isnt it.

Are copper plugs OK for a gtst running 2-3psi over stock boost.

What is the part number for the stock plugs used by Nissan?

cheers for the help

nick

Well the stock ones will be NGK's and any repco or appco or part master or where ever will carry plenty of them, and chances are the staff will know the part number off the top of thier heads. :)