I know there is an action node for it but I'm saying that it's not necesary to get it to use the tornado kick or the chasing uppercut, and using the ImportScript function allows you to use both moves in freeroam.
Just make a script where if you press X button then your actiontree changes to G_Johnny, wait like 1 second and change back to the Player actiontree. Remember to import the mission script first or you will get the overhead kick combo.