Up for consideration today is a Rockford Fosgate Punch 45 Car Amplifier.   It was removed in a working car environment; ran a pair of 12" Punch Woofers (James's system ROCKED!), we took the top off in 1988 to see how it was hooked up to try and revive a Punch 150 Amp (we didn't get that one fixed - it's in a separate listing) and have since misplaced the plastic Volume Knobs and the Case Screws.   It should work 100%, but assume it needs a little fixing so you're not disappointed if you expected it to work.