I bought this car with it missing the mounting bolt for the air cleaner. I purchased an original air cleaner form a member here, but now I realize there is no stud protruding from the carb. Is there a top, clip on style stud, or what? There is no place to thread anything into the carb.....what gives? Any help would be greatly appreciated. BTW, any good sources for purchasing the stud? What does my choke hook to? Thanks, Ron