Footboard - rear brake rod/spindle/shaft replacement
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
Thanks to Ralf Brinkmann and Charlie Mullendore of Antietam Classic Cycle for providing some of this information on the old Yahoo! Loopframe_Guzzi news group (which has now moved to Groups.io).
The rear brake rod/spindle/shaft used on footboard equipped models (MG# 13675440) is relatively rare and somewhat difficult to source. Cycle Garden now makes reproductions. As an alternative, the commonly available rear brake rod/spindle/shaft from foot peg equipped models (MG# 12675405) can be used along with the appropriately sized lever from a Moto Guzzi V35 - V50 model (MG# 19256900 or MG# 19256920). This lever replaces the original lever (MG# 12258501).

Photo courtesy of Charlie Mullendore of Antietam Classic Cycle.