Technical 1929 Model A body block question

I'm currently in the process of bolting my 29 sport coupe body to an original model a frame. I recently ordered body blocks from Mac's and have discovered that they sent one incorrect block. The rear most block that they sent me has a notch in it. I believe this block is for a phaeton or a sedan. Since I'm only bolting this to the original frame to square the body and brace it. I'm trying to find out if this block is the correct height for a coupe. The block that I have measures 1 15/16"

 

Try the ford barn you will get lots of answers.