Drag racing guy's please come in

[fillpot]

Guy's got a 69 camaro with a g-link mini tubed stock up front other than 2in lowering springs,Ls2 and 4l70e weighs around 3200lbs and car makes 440 rwhp,starting to get back into some drag racing and from what i can tell on the highway at least with this suspension setup there is no traction threw drive and this is with 325/50/15 drag radials at 17psi.The car is just son dam stiff in the rear and the springs are 12-200,kind of no what im going to do in the front but just courious if i should be looking into some springs for the back,any suggestions,also the rear shocks are double adjustable vari-shocks.THANKS!