Zod uses no parts from MOS Sups figure.... It's a TTM20 body with extended upper torso (most likely torso peg) and newly created extended biceps and thighs
From my own observation, it's the TTM20 upper torso and waist, with an extended MOS ab section, shoulders, arms and legs.
But if you have had a chance to compare both and tell me they share no parts, i shall believe you.