I purchased a set of Infinity 4" and 6.5" speakers and I'm a complete newb when it comes to speakers. I have a few ideas floating around in my head which are mounting the 6.5's up front with a Q-Logic kick panel and the 4's in the back or just mounting it the other way around in the stock locations. The thing I'm trying to figure out is a way to mount the speakers where there's good clean sound at the tailgate, and up front in the cab.

I currently have a JVC XG-KW 700 HU, Sony 4" speakers in the front stock location and the stock rear speakers with an 10" Infinity powered by a 200 watt RMS amp. This setup sounds decent at the front seats but sounds like crap out back.

I was also wondering if you can run a a 4 ohm amp with 2 ohm components?

 

I say ditch the 4'' speakers and just run the 6 1/2'' speakers and upgrade the rears, but keep them in the factory location. for mounting the fronts you can either get kick panels or door pods. I would go with custom door pods as you can get better sound staging IMO.