1969 Swinger 340

Nice ride ....but why is there a 174lb weight difference between the right front and left front ? I can understand the 33lb left/right rear due to possibly an extra leaf in the right rear but 174 is a really un-balanced. The total seems a few hundred lbs. light for a car with stock suspension and all steel (except hood) body panels, factory numbers were closer to 3200 lbs. with a 340 and 4 spd, if a modern driveline and fiberglass hood save just shy of 500 lbs. that's a great swap, you sure your borrowed scales are accurate ?.