Mopar Performance HD leaf springs ?

OK, this may be more of a restoration question, than a racing one,My Scamp is more of a street car, but I do race on occasion, so.... Has anyone tried the Mopar Performance HD reproduction leaf springs ? My 36 year old 318 stock springs are pretty much flat. I think the Super Stock springs might be a little much for my combo, specs are. 318-904/ 1.81 60 foot/ 7.80 1/8th mile/ 12.20 quarter mile @ 116 mph. Thanks guys.