There is a simple way to split the cases. Once you have everything out of the right side case, and every bolt out that goes through both cases, lay the bottom end on the left side case and take a rubber mallet to the large hump on the back of the right case and hit upwards. It should come free, with all the internals still in the left side case. Those come out pretty easy, the only difficult thing to remove is the crankshaft. You will need a harmonic balancer puller to do this.