Just a plate, you can use any dimensions that fit. No body will ever see it unless they take out the rear seat back.

You probably will not need it. We just overkilled everything. Big Hemi between the rails. Can't hurt to stiffen things up.

I have pics but they are in Ill. I won't see them till May 1.

Lots of extra welds, we put in.

I will say the car has shown no signs of stress cracking on the upper deck to quarter area. Knock on wood.