A is probably Crash Bar mount
Sidecover one is correct..
Word to the wise, some of the best bikes built are put together all the way, ridden to make sure everything works, then tore down and painted... not doing that, you will run a bit of risk if you start hacking away..
Something 350,s like to do with pods or sock filters, is blow off the carbs if it sneezes.. so, you may want to loook at bracing them.. Yeah I know they feel like they will stay, but poppong you carbs back in with an audience gets embarassing...