Transferring NJ title to PA

I have a situation that I'm not sure how to handle. I'm in the process of making a deal to buy a 72 Dart in NJ that is not running and needs a lot of work. The girl that I am buying it from has a NJ title that is not in her name, but it signed and NOT dated by the previous owner. She never got it transferred to her since the car wasn't running at the time which was about 15 years ago. I live in PA and from that I am reading online, since the NJ title is signed, I can simply take that title to the PennDOT with a tracing of the VIN and have it transferred to me. I don't believe the NJ title needs to be notarized from what I am reading. It just need to be signed by the seller and the buyer and that it is. It sounds like the VIN verification/tracing is the most important thing I need in order to get a PA title for it.

Has anyone ever been through this before?!? Any help would be greater appreciated! Thank you!!