@BakerFJ I've had no issues with 30mm spacers on top of original/stock springs on my '97. Brake lines are stock, shocks are OE Tokicos that were replaced a few years ago and all suspension bushings/etc. were replaced at the same time. The shocks are going to limit axle travel, along with the...
The rubber will likely protect the poly spacer a little and could prevent it from crumbling as quickly. A stiffer plastic protector of some sort would probably help with this even more but it's not something I've experimented with, I've just seen poly spacers crumble over time.
I took a set of...