I have a list of equipment at the bottom of the message which you guys might laugh at, but actually works really well. I have 2 4's, 2 6x9's, and 1 sub in a bandpass installed right now. I plan on putting the tweets up front, keep the 4's in the stock location in the dash, JBL 6x9's in my front doors, other 4's in my rear doors, and 6x9's in the rear deck. I have a 85 Toyota Camry. Also, is there a good design for a 3 sub bandpass that works well? I really like the performance of my sub in a bandpass box. Thanks.