Toolboxes
Coupes and Bavarias used the same toolboxes. They changed to the one-piece design for the 1974 model year.
The one-piece design was used, with some variations, through at least the E28 5 series and E24 6 series. I'm thinking of figuring out how to adapt the one-piece box to fit my 72s as they are definitely more durable than the original two-piece boxes. That makes as much sense to me as carrying the tools in a roll-up bag outside of an empty toolbox.