Spring rates

[PGSigns]

Lots of discussion on what drop springs will get folks to the level they want but with all the various combos of trucks from 63 to 72 from long bed to short bed to burb the rear weights are all over the map. Then ad moving the fuel tank to the back and other mods a 2" spring in one truck could result in 3" in another. Could we build a list of springs from the suppliers that have been checked for the rate? I have a local circle track racer with a spring checker and will check what I have here and when I get stuff. If you have checked any or have information about ones that have been checked please ad the information. I think will help the burb guys also giving an idea of what will work using truck springs.
Thoughts?
Jimmy