Tody, where I come from when someone said's, sure they are, it means there not. So I'm still not sure.
According to MOOG, the K8142 Upper Ball Joint (3 bolts) fits: Ford Fairlane 1970-1971 Ford Falcon 1970-1970 Ford Maverick 1970-1977 Ford Mustang 1970-1973 Ford Ranchero 1970-1971 Ford Torino 1970-1971 Mercury Comet 1970-1977 Mercury Cougar 1970-1973 Mercury Montego 1970-1971 http://www.moog-suspension-parts.com/proddetail.asp?prod=MOOG-K8142 Rock Auto says that the MOOG K8142 3-bolt ball joints fit these vehicles: FORD FAIRLANE (1962 - 1970) FORD FALCON (1963 - 1970) FORD FALCON SEDAN DELIVERY (1963 - 1965) FORD MAVERICK (1970 - 1977) FORD MUSTANG (1965 - 1973) FORD RANCHERO (1963 - 1971) FORD TORINO (1968 - 1971) MERCURY COMET (1963 - 1977) MERCURY COUGAR (1967 - 1973) MERCURY MONTEGO (1968 - 1971) http://www.rockauto.com/catalog/moreinfo.php?pk=203267&cc=1132119 Live on the edge, man.
I believe all the pre '70 joints are four bolt so do not interchange with '70-up parts... My '69 Fairlane Cobra has the four bolt upper B/J... Upper( & lower) control arms as assemblies with B/J will interchange between: All '70-up Maverick/Comet(I'm 99% the '69.5 have the four bolt) '67-'73 Mustang/Cougar '66-'71 Fairlane/Torino/Ranchero/Comet/Cyclone '66-'70.5 Falcon EDIT Also '75-'80 Granada/Monarch Again this is the complete A arm, if you are replacing just B/J you need to know if yours are three or four bolt type...