rokndad, it's at 9500 S Eastern Ave in the Sansone Park Place. On Eastern between the 215 and St. Rose Parkway. Site & Map here:
http://lasvegas.carsandcoffee.info/directions.php
Brian, not having gone through that process myself, I don't know. The cars that I've been a part of have all been registered in AZ and then registered later in the state where they reside. Note that at the time I registered mine any police officer could sign a form to verify the VIN number on the vehicle. I don't think that's allowed now. The VIN # will have to be checked at the DMV.
I would call Carson City ((775) 684-4368) for specific information. They may be more knowledgeable than the local offices. There is a form on their website for specially constructed vehicles you will have to complete. Here is the link to that form:
http://www.dmvnv.com/pdfforms/rd64.pdf
See ya tomorrow.