OK, thanks for all the help guys! I'm so used to my Piper site telling me I got a reply I did not realize the robust responses!
Yes, 651RK is the correct number! My bad. I've spent time talking to the seller. It was his brother's plane and he died of COVID quickly in 2021. Jerry is not a pilot so this has been a journey for him. I've spoken with the AI who did the last annual (1/24) so got some comfort from his hands on the plane, but prior annuals were done elsewhere. As a Piper guy, who learned on a Beechcraft Sport, I tend to LOVE the throttle quadrant. What you learn on.... Plenty of time in Cessna's as well so I can go either way. At 70 I'm reluctant to go the Johnson Bar route, although I loved the Johnson Bar flaps on the Sport and my Warrior.
Definately worried about corrosion and the outside storage. The engine does owe me nothing. But great compressions and prebuy will look deeply into that. I'd rather have the annual done by my shop, and its only 25 days out of an annual.....
Eyes wide open, have a buyer for my plane who is willing to wait for my next plane. The paint is faded and hopefully can be remediated.