convert '82-'92 Firebird/Camaro manual steer and brakes?

[chevy620]

Have any of you guys done this? The local salvage yard isn't being much help.
Is there a manual steering box from the factory or one from another model that fits?
What about getting rid of power brakes? Did these cars come with a non-power brake setup?

Any help is appreciated, working on the next Project Car, "10 - The HARD WAY".

Thanks,

Jok