Gotta ask - are you narrowing that rear end? That is super wide at something like 65.5 inches where a 'normal' rear end for a '32 is 60 or less inches.

Also, many F150s, especially 5.4 powered usually, came with a Dana or Eaton differential - 9.75 and 10.5" or so if memory serves me - so just be aware all F150's aren't the same