Jerry,
I think 'cause our MI roads suck so bad, they're may have been instence's, but I don't know, our roads do suck tho. I also dont think you have anything to worry about with the cops, 'cept maybee if your in an accident and they happen to see them. My point is/was that they are not as safe as coil lift, and to me there are no benifits at all, to have the spacer. As far as the rear blocks go, thats somethin' I can't explain or understand. I will be buildin' a full air-ride set-up for the rear, hopefully this winter, and the blocks will be history.
The ONLY reason I can think of why DC used the rear blocks, is for ride comfort. If they made an arched spring to accomidate the hieght instead, it would ride like hell. IMO
Later, Rob