rear leaf spring choices?

Hey guys, just got my 8.75 a body rear end finished for my dart and Im shopping new rear leafs for her as these old ones are sagging bad like when i put a full tank in the car she has low rider mode come on lol. I am using the car as a weekend cruiser and little track time so I'm looking at the mopar section on summit racing and saw those springs they sell. anybody run those? I'm open to suggestions. I am running comp engineering shocks by moroso in the front and like to have them all match, i like the ride they give for being drag shocks since they are 3 way adjustable.
http://www.summitracing.com/parts/dcc-4120864/overview/year/1972/make/dodge/model/dart