A torque-arm design rear suspension replaced the four-link design starting with the 1976 models.

Balanced arm semaphore signals replaced the earlier slotted-post design.

In 1958, the company added an arrow to replace the ball-clip design.

These replaced the previous design based on the Seal of California.

Haydon School replaced the design with that of a stylized stag's head in 1978.

In 1927 a poppet valve engine replaced the earlier design, this being used until the end of production in 1932.

All 880s and Custom 880s received a revised instrument cluster layout, replacing the previous design which had been in use with little change since 1961.

Procter and Gamble replaced the pin-on design with tapes in 1971.

Modification to the design failed to solve the technical problems, and the mint had considered replacing the design as early as 1867.

Between 1966 and 1968 the station buildings were replaced, the new design by Thomas Munro and Company.