CJ's don't use rubber mounts on the radiator. They do use a mount that supports the grill, which the radiator is attached to.
This 1 body mount usually comes in a replacement body mount set. I don't remember seeing just the single anywear.
1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1980 CJ5 trail Jeep.
1989 YJ the CJ to YJ.