Lowering blocks

I wouldn't use cast ones. I tried 2 sets of them on the back of my old Dakota and both cracked within a year. I don't know why they make and sell that garbage.

After 2 sets of the cast junk broke I found some rectangle 1/8" tubing the right size and cut my own. Took about 1/2 hr. to make the set and I never had a problem again.