Years ago before gas shocks came out Mopar recommended using 1971 Imperial shocks with most of the rear SS drag race leaf springs available back then including the 002,003 springs
Get rid of the air shocks and clamp the front half of the SS springs every where you can when a new leaf meets the main leaf
You can loosen up and reposition the rear clamps to help the car on the starting line also, slide them forward for more or less lift and don't make them line up on the same place on both springs (unless your car likes them like that ) experiment to find the best location on both sides to make your car as good as you can
Have fun, work hard and write down the results, good or bad