350TwinDeathBed where do you buy smiple stuff? How much horsepower do you get? Not Hijacking just wanted to point that out carry on.
I'd get a head unit too unless the factory one comes with RCA's, it'll never sound as good with the factory one. For the short term you'll have to splice them in as said above but I've never done that so I'm not sure how it would sound. Another alternative is a powered equillizer, my buddy had one that wired in circuit with his stereo system and then it had the RCA outputs to run his subs and an additional set of front and rears. His truck sounded pretty good since it upped the power to all the factory speakers and was easy to run the amps. Just a couple of thoughts, don't know if you can by them like that anymore, his truck was long totaled.