I am looking at buying a 04 450 FSE that may need a cylinder head and cams. I have seen a post that says these parts are the same as a Suzuki DRZ400. Does any one know if the LTZ 400 4 wheeler parts are the same? I have found a lot more used parts for the 4 wheeler than for the DRZ and that engine was also used by Kawasaki and Arctic Cat in their 4 wheelers. Thanks, Todd