Like a complete moron, I accidentally left the passenger window down on my car one night, and it rained, soaking the entire passenger side floor and ruining my amplifier. I have looked at finding another amp, and finally came across one for the fraction of the dealer's quote of about $2100. However, the amp that I am looking to purchase has a sticker that says "Q3" with part number of A1938200489, and the one in my '07 limited coupe says "Q1" with a part number A1938200789. Would it be okay for me to use the Q3 amp in place of my Q1 amp? Based on outward appearance, I would think it would work, but I want to be sure before I spend money on it. I'm sorry if this question has been answered elsewhere. I looked, but found nothing. Any help would be greatly appreciated!