If you are referring to the top diagram:
#3 is a front spring shackle kit (with rubber/cork "washers" (seals) and two bushings (for the spring eye at the front of the front spring and the frame mount)).
#8 is the spring eye bushing for the rear of the front spring (no rubber seals).
Part #7.435, Shackle Kit (front spring) - different parts for the 1/2&3/4 ton and for the 1 ton?
Part #7.428, Front spring eye bolts are also different? But, I cannot find the 1-ton spring eye bushing (Part #7.104?) for the rear of the front spring?