If I were you I'd pick up two of the RE10s *see link*
http://nissanforums.com/showthread.php?t=84293
If you order now you can get them dirt cheap. And look at some Hifonics amps. They're really good for the price.
http://nissanforums.com/showthread.php?t=84293
If you order now you can get them dirt cheap. And look at some Hifonics amps. They're really good for the price.