How to set up a chassis for drag racing?

Hi there ,

What are the basic knowledges to know, and understand, to tune a drag race chassis?
I feel I can do better with my car regarding ET, 60ft and consitency.
But, as it is totally new for me, I'm not sure what to do?
Car is the Fourplay gasser.
Stock front shocks.
Stock spindles
lowered on adjuster

Old koni yellow rear shocks
28mm sway a way torsion bars
RLR spring plate cover with empi inside urethane bushing
Empi Adjustable spring plates
Phoenix 26.6x15 slicks.

best ET so far is 11.65s 1/4m with a 1.52sec 60ft.
Best 60ft is 1.51 with a wheelie.

Thanks guy's