Revenge of the fallen edition superion maximus,
Just got him today, played around with the limbs and parts ... But couldnt get it to look right. It needed hands, a while ago I saw the appendage kit but since I only paid 5 pounds mint in box I wasn't gonna spend a further 30 or more on a set of arms and feet, I thought "I've seen this done with gundam hands, and also movie prime a while ago".
I checked my parts box 'survey says no', however I did have an old captain america robot/helicopter thing (with inividual fingers and wrist movement).

All I had to do was cut and shave a little with a scalpal to remove, which by luck the removed sections fitted superion perfectly no need to find a way to attach they are tight and easily removed, quick detailing with antique gold plasticoat paints,. Voila!! Took 10 mins total and I'm done, I see no need to make feet as the ones on it look ok.