This is my take on the player-character Ace Azzameen from the PC game X-Wing Alliance. All I did was widen the neck socket with my dremel, no mods done to the neck post. I dropped some tacky materiel in the neck socket to tighten it up. For the head, I was looking for one that had a boyish look, as Ace is the youngest in the family. The only time you see Ace anyway is with the in-flight camera. His head is mostly covered by his helmet anyway. For the helmet, Ace has one similar to Luke's, but you can see Ace's helmet in his quarters after joining the Rebellion and it has a thicker red stripe in the middle. Taking both references, I painted the visor black and a thicker red stripe in the middle of the helmet.

Head: Fallout Vault Dweller
Body: X-wing Luke Skywalker The Legacy Collection
Helmet: Kesin Ommis