Interior Question
 

I just finished fixing the rear window leak that comes standard in my 2002 F150 Lariat SuperCrew. While doing that I removed almost all of the interior trim. The back panel behind the rear seats has two little doors to access the storage area. It seems to me that this back panel with its two little doors makes the area behind the rear seats almost useless. Also, underneath all that trim, the truck frame has lots of connection points on the roof and floor for something, and oval openings that appear to be made for speakers on each side.

My first question is, they make wedge shaped tool boxes to fit behind truck seats (or at least they used to). Does anyone make a replacement trim piece with a cut-out in the middle so you can use that area?

Second, I assume the same cab is used in other truck models with other optional equipment. Does anyone know what sorts of things are made to fit those points?