Brake Booster big block

I was at the Mopar car show in Everrett, WA last weekend and there was a guy running a new gen hemi in it and he had a power brake booster that appeared to be on a braket and sat forward and up away from the fire wall a bit. I'm dropping a 400 in my dart and thought a set up like this would be great for power brakes. Any body have something similar they are running with their big block? Any picks of power brakes on a big block would be great!