As I am now well into re-triking my bike and triking my wife's bike, I have also dragged out my friends VW trike for rebuilding. Searching the forums hasn't given me the answer to my problem. Building a mid engine trike and moving the engine forward either by DIY mod or adding a second tranny housing, what is needed to extend the transmission shaft to the engine? Anyone have an explanation and or pictures how it was/has been done?