I want to convert my '71 Satellite from manual to power brakes.

I know the firewall reinforcement plate is different, and I know there's a bellcrank on the pedal linkage inside the car because the power brakes pushrod is higher up the firewall than the manual pushrod was.

My question: can the bellcrank be added to my existing brake pedal support structure, or does that need to be changed out from a power brake car?

Thanks.