Hi, weirdly enough I done a door installation last night
I used 6.5" speakers...
There is a massive problem though.
1. The original speakers are pot revited in which requires a lot of time to get through them.
2. YOU NEED A BRACKET. Depending on the depth of your speakers you may need a bracket around them so that the speaker is not directly attached to the door (
http://www.incar-emporium.com/product_i ... ts_id=3564). If your speaker is too deep, this will cause the window wind down and catch on the back it.