I have a 1990 Toyota Pickup extended cab. I want to put in a sound system. Right now I am looking at putting a 12" sub in the back seat. The sub is 2 ohms at 400 watts RMS( 800 watts Peak power). My problem is picking an amp. I was told to put a 2 ohms 400 watt amp in it. I also want to put two 3 1/2" dash speakers in it. (but I am unsure on the watt amount for them). Will all of this go well together? or do you have any recommendations? I am just new to the whole sound system thing. give me all the setups possible without blowing me out of my cab. list prices to please. thanks