Nicole finally called today and I made the payment. They had the wrong email and phone number for me. She said she's been trying to call and email me for about 4 or 5 weeks. I was the last on the list to pay so they will be starting on Monday.
The xbrace is a different RSTB they have. It is not an add on to their basic RSTB. they do not have pics of it on their site, but here is the page for it.
Hans Racecraft - Ford Mustang Force Rear Shock Tower Brace