farmer pete

Hello everyone. I have a 2012 Navigator. The left front bracket for the power running board broke. The motor is good, I just need to replace the bracket. Does anyone have the part number for just the bracket (without the motor)? Alternatively, I can buy a used motor/bracket assembly and just swap the motor. The part number on mine is 9L74-16B467-AA. I found a similar assembly on E-Bay, but with a slightly different part number 7L74-16B467-AG. Are these interchangeable? Thanks for any help. Peter