Hi Kyle,
Although I am happy that you are so enthousiastic, the thing you want to do is just not going to happen. A dead plant, is just that: Dead. Consider the following: We know how to succesfully translant a human heart. However, if someone has had a heart failure, and you put the person in a cooler for a day, and then you bring a fresh heart to the person, you cannot make the person alive again. That is the same thing here.
A fresh branch that still has living cells in it you can get to resprout, grow roots etc. But a dead piece of wood cannot be used to succesfully graft branches on. It is not about experimenting, but it really is wasting effort. What you can do is fill the groove with a bit of soil and place cuttings in. THat might work. But grafting requires a living piece of bark, in order to supoprt the branch. I have been growing plants for over 25 year, and hold both an MSc and PhD in ecosystem biology with several published works on plant fysiology; I think I know what I am talking about here..