Run the VINs, check with registries, if the VIN comes back with nothing, and was never previously registered than i would assume that you could claim ownership and part them(pretty complex as there is no proof of purchase or Bill of Sale). If not you should be able to figure out the last...
for those interested in putting a 3" track in a REV, it is back for a limited time so get it well you can:SPI billet brop and roll extended chaincase - Page 15 - REV Chassis - Mountain Sleds - DOOTalk Forums