Battery relocation for HANDLING (not drag) - best spot to mount?

Just noticed my mistype. The numbers didn’t match my picture for my 68 barracuda coupe with no fiberglass, full interior. Correction:

57.3 % front

42.7 % rear

3209 lbs total: no driver, 1/2 tank gas +/- 1/4, front mount battery
How much did it change when you moved the battery to the trunk?