2
Read the rule blips again, note they all say single cylinder is exempt from production / street use requirements or frame is open. I've been over this with Eric Kechler before. Unaltered VIN means you can't put one on the Kramer if it doesn't have one to begin with, but it doesn't require a VIN be present.
Edit: This is partially why I was hoping my motard would have done better, legal for everything I care about sans ULGP would have made it a great back up bike.