Admittedly my car is a ke70, but i had mine roadworthied and registered (from unroadworthy and unregistered) with a 5k about two months ago. I can't give you the actual reason why, but I'm almost 100% sure its sweet. I even had the chick come out of the office and inspect my engine code and she just said 'oh, it must have had a new engine put in it at some time- your engine code is different to your vin'
Still, check with the transport department.