Several. I never touched the HU since back then it had the premium Bose sound system. I had several different boxes and I ended up staying with a pair of 12" Kenwoods in my custom box. You know how the clearance is a b1tch back there with the rear windshield. 300w Drive series amp was all I needed for the bass back then. I even played around with a Jensen with a pair of 10's in a smaller box and wasn't happy. In the late 80's early 90's just about noooobody ran 1000's of watts like today. I had t-tops so because of my box when I wanted them off they had to go in the garage instead of the pouch. I had fun with the car.