Cylinder head discussion 340 with stock above deck pistons

Thanks folks, These trips to the track with street tires and 3.55 are few and far between.
I don't have much experience with nitrous, so letting those that know give guidance.
Mikes a quick learner, and eager for knowledge.
The cars plant, launch really well, - till we put decent gearsets in, with decent tires, I don't expect "track" times.
One of my son's hi rpm launches, broke an axle, looked lazer cut, lol.
Their 3 trips to the track has whet their appetites, and they can certainly learn lots here.
Thank-you .