Greetings,
feel free yo use the engineer head from my Gyrocopter mount mod. I have changed some portrait links in there to show the helmeted model.
The campaign map animations are from ChaosRobie's Gyrocopter Mount for Gelt mod. He allowed me to use his animation. I don't think he'll have any problem if you incorporate it into the mod and give him credit.
Mixu also has Master Engineer heads in Mixu's Legendary Lords 2 mod. Both of them, the bandana one even with goggles. Maybe contacting him/her would bare fruits (tho i am unable to get a response).