I have a 1996 Murray lawnmower with a six speed trans and I have a craftsman with a four speed in it. The trans in the Murray has a bushing that's been wore out and it wore into the housing. The transaxles are both a Tecumseh peerless. Is there a way I can take the parts from the six speed and put them on the four speed to make it a six speed or not. Here are some pics so far.