Reply to "Delt Wing rattle?"

I have a Delta wing and it was always chipping the corners. But it wasn't the decklid that was moving. I followed my son around in my car checking the gap all along the rear deck and what I thought was deck movement was in fact the body flexing!

Since I installed the complete stiffener kit then redid the visual test and there was no more movement. I have had no more chipping (and no more cracks in the pillars or anywhere else) since stiffening the chassis. The car handles so much better, letting the suspension do its work.