i wouldnt buy that amp if you want to run it at 2ohms... how much power do you need? look into the kicker zx line if you really need a lot of power into 2ohms.
I was thinking about running 1 12" rd classic on it, but I figured if it would do at least 600 @ 2 ohms, I was gonna do a 12" sonance instead. both of these subs are only dual 4 ohm I believe. If I do the classic, I could still add another sub and have enough power @ 1 ohm. Rockford states the amp does 300wrms @ 4 ohms, 400wrms @ 2 ohms, and 500wrms @ 1 ohm, I know it does more than that, I just want to know what It will do @ 2 ohms.