Power steering
 

I have a 70 Mach 1 with a 429/460 block that I haven't put in the car yet. I was wondering if anyone has this set up, and if so, are you running power steering or manual? I want to change from the power cyl/ control valve setup to the power box from the 71-73 stangs. I was told the manual steering pieces would be needed to run the newer power box. Is this true? Also, I wanted to know what headers will fit because I want to buy them before I put the motor in the car as it is an extremely tight fit. Thanks in advance.