Another spring suggestion. Ss vs xhd vs drag launch

I am using SS 002/003 springs on a 71 Duster that i am building for bracket racing...I am using them cause I have them..and the old springs on the car are shot also.....

At this period I am also using the Competition Engr 3 position shocks...why cause I have them...lol

What would I use otherwise...dont really know...depends on money ...and time...