[Ski-me]

I think at stock position, the rear sheet metal wheel well lip is lower than the front. The front has a larger opening.

So it appears visually to have the rear end look just a touch squatted at factory height.

If you have old rear springs, they tend to sag throughout the years adding to the sag look.

I prefer to have a little higher rear so I also added a 1" lift in the rear of my old 91' suburban. Just looks better to me. I prefer the 3/4 ton suburban stance compared to the 1/2 ton....hence the slight lift in rear.

I'd keep the zero rate.