dude, 1500watts,  i would run a toy alt in the stock location,  and run a chevy 1 wire 100 amp on the pass side using a airpump bracket from a celica,  use a relay switch to turn it on and off haveing a seperate battery so its a completely seperate system from the truck,  run you stereo and offroad lights and winch off this system so you nevber have toi worry if your trucks system is good to start the engine