am borrowing a vehicle from a relative to use for a while, it hasn't been licensed since 2013. can I license it in my name. I already have it insured

I wouldn't check with the Owyhee county. I would call the ITD. Owyhee county are terrible about answering the phones and if you get someone they'll tell you they're busy and can't answer any of your questions anyway.

I don't see why not but you need to check with DMV