I took a different route... instead, I used an old map pocket, cut out a bit of it, some material, fiberglass, bondo, wood and primer and I get this for a 6.5 on the door...
Testing shape
Almost finished, The wooden inserts where the old speaker grill used to be are painted anodized red to match the color of the console... all I need to do is wire things up and put some grey material / carpet / vinyl over the primer... and of course, remove all that painter green tape :icon_bigg