When a rear speaker went out, back in October, I adjusted the fade...resolved to fix them...and promptly forgot all about it. Now the drivers door speaker is buzzing:sighp:. Ok, ok, I'll do it (grumble grumble) 4...6.5's (with a little work in the back) correct? Shallow mounts in the rear? Same speakers front and rear? I'll dig up a Crutchfield catalog...and a credit card. Polks seem the easiest maybe. I'll take pictures.