I have a JL AUDIO 500/1V2 amplifier for sale. I had it in my G37 which I recently traded in. It was professionally installed and removed and I only used it for bout six months. It is in excellent shape and has been bench tested. The price is $315 shipped via UPS with tracking information provided. I don't have enough posts to use PM so if interested reply to this thread and I will post my email. I have feedback on ebay as well as many other forums. Thanks guys!