all of this is in my build thread
you can see all the pieces i used to make the transition to the kicks
big piece is 3/8" plywood, i did rabbet the edge to superglue 90° of 4" mailing tube
i used a lot of superglue with the activator during my fiberglass phase
glue it, active it and stick it. fresh activator will go fast and look like frost forming
the left side starts with plywood shaped for the lead edge
it's glued and screwed to the plywood that goes across the front
i glued some mailing tube inside to form the big radius
and pie cut the lower transition to the kick
notice that i did all my console, sub enclosure, column cover, and facsia on finished paint
tape and wax made it peal right off the paint
i probably put 5-7 layers of 3/4oz chopped mat on at this stage
column cover has a mdf yoke and mdf block for bolting on
4" mailing tube with label, i believe my bed strips came in it

i had just cut off the hi/lo beam switch cuz the plug was a bigassplug