Leaf Springs
FYI
back in the day I was gona buy a wrecked go fast 1969 dart for parts..he had stock worn rear springs, coil over rear shocks, and an adjustible pinion snubber..his dad said the car hooked up real good...both items are on ebay..here's the write up on the shocks.
MONROE>"Sensa-Trac Load Adjusting Shock Absorber; Maintains Ride Height Up To 1200 lbs.; Package of Two; Rear w/0 in. Lift/Drop;"