I took my ladder bars off an installed these. I guess I like them more. Ride is better and traction is good. I don't know when they came out and for nostalgia purposed I might go back to my ladder bars.
Here is a quick pic I found that helps show how they are installed.
From what I've heard, the new thing for Chevelles is those lift bars, as they improve tractions and handeling.
I just don't think they look correct as they hang down more. The no-hops would be my choice since you can't really tell they are installed.