Option 1: Use a mix of Chevy/FSJ and Ford parts.  You'll need a Chevy or Full Size Jeep Dana 44 flat top knuckles, spindle, caliper mount plate and outer axle shaft from a 73-76, see chart for exact years and BOM.  To convert these to the Ford 5 on 5.5” (also the same bolt pattern as a Jeep CJ, Scout II and many other vehicles) you’ll need a 1976-1984 or 1987-1995 Ford hub, rotor and bearing.   My suggestion is use 76-79 parts, but you can use an 80’s Ford IFS Dana 44 (minus 1986 and some 85 as they had a unique style.) Pull the hub with the bearings, rotor and lock-out. Any standard Dana 44 ½ ton or Chevy ½ ton 10 bolt axle lock outs should work, and spare are always good.

Option 2: Use only Ford parts. One catch, you'll need a 1/2 Super-Cab knuckle, see above General misconceptions table for reason.  If you have a nice Ford 1/2 ton axle with new calipers and rotor I suggest just find in a knuckle from a 1/2 Super-Cab, as that is the only part you'll need.  (Note to self, check spindle part numbers in Dana book to confirm this) Or you can just grab the entire Knuckles Out from a 1/2 Super-Cab and bolt it up to your inner knuckle.

Option 3: Run IHC or Dodge parts.  Because of the IHC 8 bolt spindle and the limited years plus the few truck produced I don't recommend this option.  Save those knuckles for the Scout guys, plus you've have to swap knuckles out and the parts cast more.  Dodge parts knuckles out because of the uniqueness of them(?), years are 1980.5 - 93 and 86 and up is an auto or fulltime hub.