bulkhead
It should fit if it is for a ZR. The mountain cat bulkhead had the chaincase about 3/8 inch lower and so needed a different motor/jackshaft mount on the driven clutch side. If you are looking at an 03 mountain Cat 1M the chaincase is lower yet and rolled back some. You can still make the tunnel fit but your rear suspension mounting points will be wrong. I found that out the hard way.