While I recently retired from building FFR kits, I may get sucked into fixing a couple issues with a MK2 that a 78 year old guy has been working on for over 10 years. He currently has manual brakes and steering. He can't stop or turn the car due to his age. How much trouble would it be to convert to power brakes and power steering with a nearly completed car? I am weighing if I want to get involved or not. He is a friend of mines buddy and I would like to help, but only if it can be done with body on. It has a mustang pedal box. Any help would be appreciated.