Thansk to JAF who pointed me towards this model which is a great starting point. I am (almost) scratch building this using parts from other existing TFs, including Alternators. I will engineer him almost identically to his G1 figure, but larger and with full articulation. I put the model together just now, I will be filling in some of the hollow areas to give him more weight. The nose of the shuttle will be shortened a bit so it can fold into the hull of the ship to form feet and the front of the train. I still need to hit up the local hobby shop and / or ebay in search of a model train for his 3rd formation. Basically will have the same TF process as the G1 figure, arms will hide in the back sides of the shuttle. Front of shuttle will be the legs. Wings will have 2 sets of hinges on them, train will be on flat parts which hinge and are hidden on shuttle mode. Tail wing thing will be rebuilt and on a hinge to form his chest wings. Back of shuttle will be on a hinge and swing to his back, and reveal the head. Pretty straight-forward, should be nice challenge for me. Update: 3/15/09 Got the train model today.