Happened upon this chart on Ridetech website
If I'm looking at it right, a lower (.500) ratio car can run the same spring as one with a higher (.750) ratio, and have a lower spring rate at the wheel. So a G body (at .595) needs more spring rate than a C5 Corvette (at .798 front) to have the same wheel rate?
RideTech StrongARM Dimensions
www.ridetech.com