I used the Bandai Model Kit Darth Vader head (custom painted) and fixed it onto the Mafex Darth Vader body. I used the glue gun technique to modify the head socket. Overall, I think it looks pretty good.
The figures contained in the Custom Showcase are not for sale by Figure Realm, and the creators of the customs are no way affiliated with Figure Realm. The Custom Showcase is purely for entertainment purposes and only provides a means for the creators to show off their work and trade ideas. Figure Realm does not make or sell customs.