[Mr70]

For 1969 Chevrolets,the QR Front & DW Rear coil springs were only used together on the following model numbers when optioned as such:
*Models 15411/15611 w/RPO L-72 w/front weight 0-172lbs. & rear 0-106lbs.
*Models 15469/15669 w/RPO L-72 w/front weight 0-156lbs. & rear 0-50lbs.
*Models 16337 w/F-40 suspension w/front weight over 308lbs. & rear 0-160lbs.
*Models 16437/16447/16467/16647 w/F-40 suspension w/front weight 209-268lbs. & rear 0-72lbs.,AND these same 4 models w/L-72 engine w/front weight 199-258lbs. & rear 0-101lbs.,AND these same models w/RPO Z-24 package with front 199-258lbs. & rear 0-101lbs.(excluding model 16647)