Factory manual or power brakes?

[Hemidog]

I need to know how you identify the difference between power and manual MS reinforcement bracket, what are the difference between the bolt holes?
I don't know if my car came with power or manual brakes, allthough the plate had a lot of pitting around the lower four holes, which indicate manual.... 

[Hemidog]

Here's a couple of pictures of mine:

[Just 6T9 CHGR]

Thats a manual brake plate.....this is a power brake plate

The 2 studs at the top retain the plate to the wall along with the lower bolts on the manual master....on the power plate the boosters 4 studs hold the plate to the fire wall