The easiest way to do it would be to wire the subs up in parallel and run them at 1 ohm.2,000 watts RMS would be optimal but I wouldn't recommend going much over that as L7s aren't the best subs to run a lot higher than their RMS ratings.
There are a number of different amps I could set you up with that would push those subs perfect, it honestly depends on what your budget is like.I'll get you a few prices that are a steal of a deal and send them to you through a PM.
