Does anyone have a video or instructions for the removal of the amp for a 94 LS400? Lexus has told me that it sits above the CD changer in my trunk. Any pointers on installing a replacement (used) amp? The P/N Lexus gave me was 86260-50110 but loo king at eBay, sometime PN 86280-50141 is given. Does anyone know which is correct or if either will work?