Has anyone here installed the YZ450 Cam in their WR400? I have tried to search for this but came up blank. I have seen a lot of people installint them in their 450's and a couple 426's but no 400's. My local dealer said that they are too different and will not work. Is this true? or is there someone here who as actually tried this combination. Please let me know. I have also searched the YZ forum for this and have come up with the same thing, no 400's.