Hey all. Jus had a question I've been wanting to replace all 4 of my door speakers and I'm wantting to kno if there is a certain size speaker that will fit right in withut any trouble because I've noticed there's like a built in subwoofer or somethin on each door with like a 3 or 4 inch speaker next to it I'm just wondering so if anyone gots any advice on wat they did or wat size fits id appreciate it thank you all