I have had my 2004 GX for a couple weeks and can't stand the crackling and rattling from the speakers anymore. I know that I can just replace the surrounds but I have never been one for factory set ups in any vehicle that I have owned. Everything I have read says that I need to get the speaker trim adaptors for the from lower 6x9's but do I also have to get the adapters for the rear door 5 1/4's as well? Thanks in advance guys! This forum is a wealth of knowledge and I really appreciate the input.