10” Drum missing park brake connector

It looks like you've got 331 shoes. That's correct for '69 up 10 x 1.75"
If you're car is a pre '69 model, you will also need the '69 and up adjusters if they expand in the opposite rotation.

1969 drum changes: 1969 Chrysler Imperial Servicing Highlights Guide from the Master Technicians Service Conference Session 254

1969 Auto-adjuster spring tips: Drum Brake Service Highlights (Session 260) from the Master Technician's Service Conference