Depending on what you are looking for, here are the most likely "full pieces" for that identifier: 1. Austin Healey BJ8 Restoration Series
They have a well-documented BJ8 Restoration: Part 1 The Teardown which covers the removal of fenders, doors, and the dash pad.
If you are looking for a "piece" in terms of physical components or technical documentation:
Retailers like Moss Motors offer "full pieces" for the BJ8 interior, such as complete blue vinyl panel kits that include door panels, kick panels, and dash top vinyl.
You can follow the complete progression of a BJ8 restoration, starting from Part 1: Restoring Bob Hill's Austin-Healey . 2. Manuals and Technical Parts
If you are following a restoration project, "Part 1" usually refers to the initial "teardown" or assessment phase.
You can find video guides for specific full-piece installations, such as Upper Door Top Cappings for the BJ7 and BJ8 models. 3. Digital Files (.rar)