^This. I personally have not put in the research, but from what I have read/been told, here's the scoop:
Its virtually impossible and it has to do with the VIN. Trying to insure a vehicle that was never meant to be insured for street use is basically considered the same as building a motorcycle from scratch and trying to assign your own VIN. From the people I've talked too, it is much easier to simply buy a SM than build one.
Once again, I personally did not put the time in to research so don't hold me to it. If I have time I will do some digging. In the mean time, you will need to contact MPI and VIU and find out what their requirements would be for doing such a thing.