Custom Mount Rushmore Face Swap

I need to replace the faces on Mount Rushmore with those of four specific individuals. The new faces should be rendered in a way that maintains the existing style of the monument, ensuring it looks the same, just with different faces.

Requirements:
- Replace all four original faces
- Maintain the current style of Mount Rushmore
- Use provided photographs for accuracy

Ideal Skills:
- Experience with stone carving or similar
- Attention to detail
- Ability to replicate existing styles