Help ID my Dana 60 calipers
I just bought a new (to me) LJ that has Dana 60s front and rear. I was told that they came from a SuperDuty. The front has 35 spline and is not the Dana 50 (according to my differential installer). The rear is a full floater 35 spline. The front and rear axles have been upgraded to Yukons so they may not have started as 35 spline. What I would like to know is which year/ model SuperDuty they came from. I am sure it is a range of years so that would be fine to know. I want to replace the brake pads front and rear. It would be nice to order for a specific truck. Here are the pictures:
The first 3 pictures are the front caliper. The last picture is of the rear caliper.