dual quad nitrous !!?!!

The wheel hop could be coming from your slapper bars. give the slapper some space so the spring takes some of the shock, before the slappers make everything solid.

I was reading in the mother mopar chassis book yesterday. And it said that the pinion snubber should be 1/2" from the floor.(stick shift car with SS Springs.)

Now here is my theory.
If the center of the axle to the end of you slapper bars is 3 X the length of the original Pinion Snubber.....3X1/2 or .5 =1.5" of play before the slapper goes to work!

I know you would have to refab them slappers to make it work, but i think you're only asking to twist a axle tube if you don't lets the spring take up some of the shock from the launch.

By the way, Nice reaction time!