I'm a new member to this forum, and I've been reading on a lot of fantastic information here. I just purchased a 2004 SR5, V8 that has the stock CD/Cassette radio, not the 6 disc changer. I want to do some audio upgrades. I was first going to start out with speakers. Does anyone what speakers fit in the front doors and the rear doors? Also, are there any particular speakers that are highly recommended from you guys? Thanks!