LR302:
My expertise is more with the newer '98-'11, so I might not be 100% correct.
The 1st 3/4 drop comes from DJM dream beams/rear axle flip - you need the dream beams to be able to align it.
Belltech no longer carries coils for the '84, but I believe the '89-'97 coils are same. Which would get you another 2 in front. And the lowering hanger from Belltech will get you 2 or 4" in back for sure.
Along with the lowering hangers, you will need a 'c' notch kit - Belltech sells them as do others.
So, 5/6 or 5/8 can be accomplished with 'commercial' parts. You can get another inch on the rear with a drop block.
Lowering another 2" in front is going to require cutting coils, and you will be at/beyond the limit to align it.