Just finished a engine swap every thing is working great took it out for a test spin and the brakes SUCK firm pedel but no power like the booster isnt working did I miss somthing ?
engine swap from what to what. could be a hydroboost problem.
EDIT: noticed yo uasked about power steering. if it is a modular powered mustang, you have hydroboost. that uses the powersteering pump to replicate a brake booster.