You get some lowering with a spring pad that has fewer nubs. It may not make much difference because the old pads are compressed. I remember measuring the difference between new 2-nib and old 4-nib for either the 84 or 85 SD and it wasn't much.

I also remember that it doesn't change suspension geometry but research to confirm.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.