I put a 76 D44 in my 70. I used the 70 track bar and it worked out great. The D44 wound up centered pretty well, but I installed a 2 1/2" suspension lift at the same time. I also installed F150 power steering box, so I had to get a shorter, adjustable drag link. I lengthened the D30 tie-rod to fit the D44 by cutting off the drivers end, threading, and using the passenger side tie-rod end and coupling.