I have a 2005 camry with a stock JBL systems. I had a shop install an 800.5 Precision Power Multi Channel amp, 1 channel for the woofers and 4 for the front, 2-12" Polk Momo woofers, and 6.5" Polk Audio mids and highs; they also installed 2-PAC SNI-35 adjustable output adapters. They installed...