i'm starting christmas shopping and i have found the perfect gift to get for the man but the question is where do i start....i'm planning on getting him a car stereo but i dont know where to start...he has a 2006 pontiac gran prix so do i need to get an amp and sub and the radio...i dont know what i need to get i really dont have a budget but i dont want it to be to much....maybe 350-400 dollars...i dont know what a good budget is...but yeah...any ideas would be great i dont know brands or anything so that would also be good for recammendations (i cant spell lol whoops).