Let's see your bulkheads

i built it around the backseat

Derrick did this when he owned the car

Here's my first attempt

I covered it with speaker felt. It can be bought at an interior shop.

Here is mine and it now has the regular interior panel with vinyl on it covering the side rear window brace area.
David

Here is the trunk shot with aluminum panels.
It is a 4 link car and it has the stock package tray in it yet.
David

Thanks for the ideas. If anyone has more keep'em coming