Leaf spring dilemma !

[54Caddy]

Having a major problem went to install my flip kit and found out at one time somebody put a leaf from a 70 4x4 on one side. With flip installed it's 3/4 difference from side to side. The passenger side is one with swapped leaf to compensate thinking of putting 3/4 block on driver side to level it out. But that's not my style of work would like it done right. Looking for a good recommendation for new leafs. I have the 52 inch pack.

[KQQL IT]

Swap the leafs. My 73 needed swapped to get level

[54Caddy]

did that wont work. for some rear the one that is marked 70 4x4 chevy has a higher arch in it making the problem. Like said at one time before the truck was in my family 20 years ago someone replaced that leaf with those yellow junk yard markings. Handled the problem my new leafs should be here this week. went ahead and order some brand new ones. 250 shipped, oh well rather have it rite then a block on one side to make up for difference. Plus now no spring sag to take into consideration and all suspension will be new front and back.