Hello swampratt, welcome to the Stovebolt
Does your burb still have the original closed knuckel front axle?
If so, the 71 and up Dana 44 axles will bolt in with a little muscle. They will have the disc brake and open knuckle front axle.
Make sure you have the correct gear ratio to match the rear end. If your rear ratio is 4:11, you will need a 4:10 front ratio. Rear 4:10, front 4:09. Rear 3:73, front 3:72. Rear 3:08, front 3:07.
_The master cylinder and proportioning valve will be needed from the same truck that donates the axle assembly.