2006 GMC Yukon

Hello! Was a great driver prior to engine not holding oil pressure. Had some starter/elec/battery work done prior to it failing, as well as replacing the throttle body and abs/braking. Has been sitting for awhile on street. I have the bill of sale but not the latest registration, I was planning on dmv registration but never did as I should have, and then had the issue and parked it. It was shifting and driving /accelerating so smoothly until the engine issues. Let me know if you have any questions. This may be a good car for mechanics , the inclined car folks, or a parts car. ~ 206k. The transmission/ drivetrain and brakes/shocks were good otherwise. Latest update: I looked into what I have paperwork wise. I have the bill of sale signed by the previous owner, their registration card with info, and an application he had printed for a replacement title when we met at the dmv. Unfortunately I never followed up before the issues. Not sure if that makes this a parts car, (even through the only known issue now is the engine) or if anyone has experience dealing with a replacement title process, etc. I basically have the sales paperwork, and the documents they had before regarding their registration. Thank you for looking !