This is the list of the part you can swap or not with gen :
Direct swap :
- complete case back
- He Valve (i do not try it but i think it's possible)
Swap with light mods :
- Hands. You have to change the tubes.
- Dial if you cut the feets
- Insert.
Swap with mods :
- "Bezel balls", placed in the case under the bezel. You have to tap the holes but i think it can fit (i do not try)
- Orange button (i do not try it but i think it's possible if you tap the stop hole)
Can't swap :
- Movement.
- Crown + crown quard (not the same construction)
- Complete bezel.
- Crystal.