Sorry do not have helpful info for this, but maybe a little humor. First Kaiser was a '52 Manhattan. Right rear spring broke. Got one rear spring from a parts-yard out of a '51. Got it installed and that side of the rear was higher than the other. Went and got the other spring. Now the rearend was level side to side, but the car leaned forward significantly from back to front! Drove it for another year before selling it.