Very good! If you have B9-Redux (you can also use B8-Redux = the same size of stator, only difference in rpm of fan models) you can easily mod your g5-fan with it:
1) Pull out the fan blades [no need to drill]
2) Use a gas wrench or large pliers to pull out the stator. But do not forget to carefully wrap the stator with some soft material so that the pliers do not damage the stator. The stator is glued on, so it must be pulled out by slowly twisting it to the left and right. Do not forget to wrap the stator with soft material, otherwise you will damage (!)
PS: And if you are not going to re-solder the wires to the desired size, have care for the wires when you pull (!)