I've been kicking around the idea of putting a 10 speed behind the 12 valve in my '78 D300 for a while now and wondered if anybody has actually done it. I've searched it on youtube and in Google a few times but never actually saw the transmission bolted to the engine. Has anybody on here ever seen or done it? If so, what model/make transmission did you use? How big is it? Did you build your own bell housing? How was the clutch to set up? Is there a smaller 10 speed from an older truck that works better? Any information from anyone that has actually laid their hands on this combination or anybody that knows of a smaller 10 speed transmission would be greatly appreciated. Thanks!