Which brand name spark plugs are the best for the 02 spec V? I've heard that the factory installed plugs are just regular plugs that meet the minimum requirements. Will it help performance in anyway? Thanks.

Use the stock ones, those are some of the best you're going to find for the sentra. Better ones are going to be much more expensive, and gains will be VERY minimal at best.

THERE ARE NEW ONES THAT JUST CAME OUT AND I BOUGHT THEM AT A GOOD RATE, you mite find on ebay for a good price, they are called denso or NGK iridium spark plugs, BIG ASS DIFFERENCE

Thanks for the info Sarsourus. How much did they cost? Do you think I could find them at Pep Boys or Auto Zone?

pep boys 6.99 each