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

Intercomp digital scales....accurate

My 68 Barracuda coupe:

without driver, spare tire, trunk mat 3/4 tank of gas.

3209 lbs. 57.28% front / 42.72% rear

Aluminum heads/intake, no A/C, aluminum water pump, aluminum rims, aluminum radiator, denso starter, mini alternator, aftermarket steering wheel, aluminum master cyl, aftermarket Scat Pro front seats,console, heater, rear defroster, full interior, 1.14" torsion bars, TTI headers and full exhaust w/tips, Hotchkis TVS with subframe connectors. Battery in front.

With driver and 15x8 steel rallye spare:

3445 lbs. 55.62% front / 44.38% rear

All done on very accurate Intercomp one year old digital race scales.

Note: the front scales were able to slide on the surface so there was not any suspension bind holding the front end up.

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