You will find that CS has encoded the panels into the model.   Unlike the FS2004 edition where you could swap out some panels the FSX version isn't that way.    You can do some creative things with the ISG Panels like replace the TCAS with an navigation display.   You can place ISG MCU in a blank spot on the center console.   But there is limits to what you can change.      I've have seen that someone created a decent J model home built setup.   Looks close and will work for FSX.