After some research it seems this clutch linkage part probably goes to a 1964 or 1965 Skylark/Special with a six or a 300 inch V8 engine. Looks like the threaded part can’t be removed without damage to the casting. I purchased this assembly, a Wildcat equalizer and a 1965 GS clutch equalizer together from an EBay offering. Would like to list the two extra parts for sale but don’t know what this one is. Any help appreciated.