Here are some amps that would work well.

(DO you know how loud this will be???)

http://www.crutchfield.com/S-YWRwk9555RA/cgi-bin/ProdView.asp?g=130&I=236T1501D

http://www.crutchfield.com/S-YWRwk9555RA/cgi-bin/ProdView.asp?g=130&I=108R1210A

http://www.crutchfield.com/S-YWRwk9555RA/cgi-bin/ProdView.asp?g=130&I=113KACX811

http://www.crutchfield.com/S-YWRwk9555RA/cgi-bin/ProdView.asp?g=130&I=218OCR801

These are just a few... There are many many many more out there. Like I said before, you should deside how much you want to spend...