If the spacers were on drivers side perhaps they figured there is always a driver so that side may bottom out more...

FWIW My 70 Challenger R/T SE U code had them on both sides... Originally equipped with 14" tires...

My T/A had them & my 71 Hemi Challenger had them...


"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."