will a 2001 yz426 motor fit a 2006 450 frame?

i have a yz426  motor and i would like to put it in a yz450 2006 frame. will it work ? 


Not very well.  You can make it fit the frame, but you'll have to do something to make the air boot reach the carb, fabricate a couple sets of motor mounts, and then build and mount an external oil tank, since the aluminum frame has none. 


Quite a ways short of a bolt-in.

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