zero rate illeagal?? :shock: Never heard that, but if you say so.
Clodstall, the zero rate gives you the option of moving your axle forward or backwards: 0", 1", or 1.5"
There are multiple holes countersunk into the steel that allow the centering pin of the spring pack to be located where you want it when you bolt it to the zero rate, and then you put a shorter centering pin through the zero only and it sits inside the spring perch centering hole.
My truck runs a zero rate in the rear, with the axle moved 1.5" back. It also has a 2.5" shackle flip, and skyjacker 4" lift spring pack.
The front axle was moved forward 1.5" by re-drilling the centering hole on the spring perch on the D60, and in runs a 6" spring pack with 4" shackles.
I know, confusing, but it works. I won't go into what Jason and Kevin have had to do to get the doubler and crossover BTA steering all clearanced!! :shock: