The tune is probably MHD, which is VIN locked based on the first UIF entry in the DME. I don't think that can be easily changed. Writing the VIN and ISN to the new DME would be the best way to do this. As far as the tune goes, MHD will generally refund the old license if he purchases one for the new VIN.
Cloning won't work since MSD80 and MSD81 run different ROM.