Late 70s-80s Parts K5LA BB5

Completely random parts K5LA. I just received the 3A and 4A from a friend to make this horn complete. The 1, 2, 3A, 4A are 80s bells. The manifold is big tag late 70s. The 5 bell dates to 77’, being the early die cast corker variation with a factory installed restrictor in the foot. Sound sweet!