What NON-Mopar car do you most regret selling?

There is one that I see every once in a while at a car show about 50mi from here. Nice car and refreshing to see
Mama had a 67 Tempest 4 door with the 230 OHC 6 with a quadrajet on it. It would obliterate the right rear tire. I speak from first hand experience. To date, I've never in my life seen another Tempest with the Sprint 6 engine option in it, only in Firebirds. They bought that car brand new from Lamar Pontiac in Macon, Georgia in late 1966. We had it until it mysteriously started eating water pump pulleys and Daddy finally got tired of it and traded it in the late 70s or early 80s.