What car amplifier should I get?

I am going to be building an sound system in my Jeep. I'm buying a pair of 10" subs. and want to know what type of amp I should get. The subs are JL Audio and put out 600 Watts each (1200 Watts for pair) and 300 watts RMS each (600 Watts pair). and the impedance is dual 4 ohm.