I have a picture of a Sumiya bike, that had the reinforced cam cover! Will scan it and show it here.
Rob
Let's see it! Daytona RC750's in 1970 did NOT have them. And I have pics from pits at Daytona 73 and it is not on there. Could be put on afterwords for restoration of just 'cause...someone thought it looked cool.
Here is real Sumiya bike in Honda Collection Hall, from Honda's official Museum book.
No special cover shown here.
KOS