Just an fyi... you can do it withis alot less power than that! I used to compete back in the day in IASCA and had 2 Orion HCCA 225's... one on the subs (4) 12's and one on front /rear and it would beat your ass... and later on with a Soundstream reference 404 on front/rear, and a reference 700 on the subs. but that was in a 79 Pontiac Bonneville 2dr... I did db drags once and ran 138.4db... it whooped ass!!
lol...I know a guy that's running 6 12s on 600 rms...it bangs pretty good...again...its the enclosure and wired ohms to make the amp work to full capacity