needs some quick carb Q's answered
picture 1...missing manual choke and choke linkage....
picture 2...does not look like a 4 corner idle metering block..so nothing is missing.
picture 3...
picture 4....carb needs a good cleaning...holley at one time had screws in the other holes...but no longer uses them...although depending on the age of the carb...the main body could still be drilled for them.