hi Waldheri51
i have a similar problem with my 1 ton front springs, there are 2 inch wide leafs
i think... maybe... that the rear shackle from the 3/4 Ton might be the same part used for the front shackle on the 1 ton and maybe up to your 2 ton
part # 499533

so maybe... check out these parts if they might work for you springs:
classic parts - 74-021 $40 each (washers included)
LMCtruck - 34-1362 $30 each (plus $6 for washer set 34-1406)

i'm also planning to order one set to see if i can make that work on my front 2 inch wide springs
if you find a solution please post it here so we can all know
thanks
-s