Straight Axle Law? ( For Street Gasser )

Figure I would ask other Racers/Street here,

I have a strained eye looking at a Street Gasser for sale,
Went to NJMV to ask about the Law pertaining to the Axle, And they didn't know what the heck i was talking about,
Said bring a picture.

Anyone here familiar with NJ MV Laws on this?

Thanks