I want to replace the cheap woofer in my rear deck. Either a quality 8" or cut the hole larger for a 10". I removed both screws holding the brake light and unclipped it. The front clips of the rear deck pop right up but I cant get the sides loose. Do I need to take the rear pillars and plastics off ? I"d prefer not to do that if there's another way. Any advice ? I thought maybe just cut the deck hole from the top but I don't think it will lay quite right if I do that.