400ex motor in 300ex...possible??

[Exrider434]

What kind of work would have to be done in order for this to be done?? Is there anyone who has done this and could tell me how??
thanks

[enduro400rider]

someone on hear did it, i cant remember who tho, search for it. you would have to make custom brackets to mount it, it would be hard since the swinger bolt goes throught the case on a 400. you would be better off putting a 350x motor in it or just buying a 400