Hi Thank you I had found them
I managed to change the head on one OK and return it back
There are a few problems here
For the head to be a good likeness it’s needs to be high resolution, Daz Studio Genesis 8 head is around 4k x 4k, I changed the texture of the face to 512k x 512k just to try it out it worked but it looked out of alignment
The next problem is the 3d object of the head is representative of the shape of the persons head
So if you apply a texture it needs to fit the 3d object
To change the format of the 3d model from exported FBX to glTF I found easy2convert did that OK
I think I’ve seen a P.S.P way of changing a 2d image to a 3d one that looks very similar