The simple answer to this question, is you have to do everything. What can't be recovered or replaced, you have to paint it. If you leave out any one piece it sticks out like a sore thumb! Take the Cessna 206 we have just done for ourselves. The interior to us means:
So if you value where you spend 100% of your time in the air, this is an insight into what you must do to get it to a really top standard.