The (what they called the claim shell) mounts are kind of like a safety mount. If the rubber breaks the motor cannot flip/roll over.
Tom the carb linkage piece in Chevelle292Wagon photo do you have one?
https://www.inliners.org/ubbthreads...2%201%20ton%20pick%20up%20truck%2002.jpgI have been trying to find one like it.