I work in the auto sales industry. There are many pitfalls to what your proposing. Do your due diligence and don't leave anything to chance. Get everything in writing, notarized if necessary. Talk to EVERYONE involved, the seller, dealer where it's to be inspected, the tech who actually does the PPI, the bank holding the lien, the transport company that's gonna ship your car, some references from said transport company, and anyone else involved. There are numerous title and lien release forms available online from your respective DMV.