In that old Steve M. article about lightening the Duster, they used mono leaves with a snubber to save weight...it worked on their 11 second car, but not really much tuning you can do, so may not be viable on a higher powered car.
Faster, Faster until the thrill of speed overcomes the fear of death...
71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater