roughly, about how much does the wiring, good alternator, and 2 batteries run $$$$$.  Is it a lot.  I know the alt will be a few hundred, but that is about it.  I will probably have about 5K to spend initially, but I should have a few things done before this initial spending, like the alternator. Lastly, what is big difference between driver and SPL.  I want tons of SPL, but will be driving and pounding it alot.  How much of a difference does this make??