Not done the outer door skin at all, just the inner skin with sound deadening and the back of the door card with 8mm foam sound insulation. Figured I'd just try the cheap and easy part of the job first and see how it goes then if I still wasn't happy I could always continue with new speakers and then sound deaden the outer door panel.@Loopdreams did you do the front doors by going through the speaker hole, or by removing the inner skin??
Been wanting to do this myself for sometime, but I’m not sure how to tackle it yet?