Standard Brake Setup?

[wxman1]

I'm putting a link in this message to an image that I shot of
my brake booster in the engine compartment of my 69 C10
P/U. The booster is mounted to a bracket that is mounted to
the firewall. Most power boosters I've seen mount directly
to the firewall with the actuator rod extending through the
firewall to the brake pedal.

http://mywebpages.comcast.net/wxgeek/p8160014.jpg

Is this a standard brake setup? Or maybe this is a distant
cousin?

Jim M.