Z71 Kris
Independence...
you could use this AudioQue..http://www.audioque.com/AQ750-Amplifier_p_46.html, I just recomended it to Jon(boilerup) for his accord, it looks like about 400 rms at about 3ohm....or you could do this rockford for a little bit morehttp://www.crutchfield.com/p_575R5001/Rockford-Fosgate-Prime-R500-1.html?tp=35834&nvpair=FFBrand|Rockford+Fosgate
Why do you want that jl; anyways? Hard to match amp wise, and can get comparable things for way less money?
How do you figure out what it outputs at 3Ohms?
As far as why JL. I have friends with all different kinds of setups. The one that impresses me the most as being most versatile is the one that has a JL. It hits all the low notes and is really good for rocking bass riffs. I listen to everything so I want something that hits hard and fast, but that I'm not afraid to bump every once in a while.
a lot of that is box and amp...you kinda guess-ta-mate 3 ohm, since jl is one of the only 3ohm brands nobody really marks what power is at 3ohm, you take 4ohm and 2 ohm what is in the middle is your 3ohm power, but again, I know this is personal preference and all, but there are dozens of subs I would buy before a jl, especially for their price...