Here's a picture of the kit. I bought the billet fitting block from them too. The brackets are 1/4" thick steel and powder coated. This is the best designed system on the market in my opinion.
I have this on my build and it fits very well I also used a alt mount from ICT billet part #551667-1 for the mount and #551550 for the belt and pulley they fit well but have a small concern about belt wrap but time will tell.