Well, using hot rodder math, that's 2 tenths (or more) of a second in the 1/4 mile.
Also, a heavier car will handle WORSE, regardless of distribution. Better to reduce weight than increase.
You could weld 1000 lbs of lead into the wheelwells and keep the distribution 50/50, but it won't improve handling.
Lastly, 50/50 F/R distribution is NOT the "holy grail" of handling for a FF car.
But I'll bet it rocks.
