Stock weight distribution for various body styles - can you improve balance w/out drastic mods?

Has anyone ever put their A-Body on corner weight scales? How did it come out?
How do the various incarnations of the A-Body stack up?

I have always heard that the coupe version of the A-body platform (Duster, Demon, Sport) had relatively good weight distribution and that all of the versions were decent for their era. Is that correct?

So most guys who aren't here for just repair/restore info are probably interested in improving chassis/suspension. What are the first things you'd recommend to make a significant difference in balance/weight distribution? What have you tried? What isn't worth the trouble?

The height of the center of gravity is a critical factor as well. Aside from lowering the car down, is there anything that can be done to affect that point?