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

Replace heavy cast iron heads and intake with aluminum parts. Replace cast iron exhaust manifolds with headers. Remove cast iron steering box and/or power steering and replace with aluminum steering box. Change to lightweight modern starter. Those are all pretty easy mods, removing lots of front end weight. Battery can pretty easily get moved into the trunk, although that adds to total weight, but puts most of it in the rear.