Well, the next set down is recommended for a 2800 lb car, P4120863/4120864. Which set exactly would be best for your application is probably a better question for an experienced drag racer, which I am not...
http://www.summitracing.com/search/brand/mopar-performance/product-line/mopar-performance-competition-leaf-springs/maximum-recommended-vehicle-weight-lbs/2-800-lbs?N=400172%2B303247%2B4294919798&autoview=SKU