My 4 speed auto ED Falcon has magically become a 2 speed thanks to the disappearance of 2nd and 4th gear (as they share the same band). I have a second car of the exact same model I butcher for spare parts. My question is "How do I remove the 2 gearboxes and put the good one into the car I actually drive?" and "What tools, gaskets, etc will I need?"