Awesome truck!
I had a a similar setup on my 86 and I believe the general consensus is to do away with the blocks. Ultimately, the axle housing on mine got stress fractures due to the blocks causing axle wrap so I ditched them.
Now I have OME rear springs with 5” TG shackles & OME shocks. This is a bolt on setup. I’m happy with the way it turned out because it works with my 3” TG front SAS. Others might be able to give you other solutions.
What is your front leaf spring? TG?
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