jbl sound like a good choice //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif possibly a bigger jbl, like a 600.1 as then when u upgrade it will be more useful and that way u can tuirn the gain down and the amp wont eat as much battery power than a pushed 300.1
I would say to get the JBL 600.1, but you might be tight on budget. IF you are, and im not saying you are, then i would look into the Profile 800SX. It does 200w rms @ 4ohms. I think that they are overrated so you will get roughly around the rms of your subs.