Porsche Warranty, Standalone, it's what I run mine on, cover up to 15 years old or 125k miles.
Last Service has to OPC and as above needs to pass the 111 point check and the car needs to be Porsche original parts, down to the battery (YMMV there).
https://www.porsche.com/uk/accessoriesandservice/porscheservice/vehicleinformation/approvedwarranty/