Generation IV Internal Engine - LS2/LQ9 Rod & Piston Compatible with LQ4?

I've searched for the past two hours and cant find a definitive answer. Looking to swap the rods and pistons in my LQ4 for a set from the LS2 or LQ9. Is the LQ9/LS2 setup compatible with my LQ4 crank? Any other potential problems I may encounter?