Flew the 105, never flew the 111, but for comparison down low.....
After a head-on pass with an F-105, I was able to make the 180 and run him down in a clean F-4. Of course F-105s were older and somewhat tired and war weary by then.
Same situation with an F-111, head-on pass in clean F-4, made the 180 and wasn't able to get close to him and he was opening.
F-111 never officially tried for the low altitude speed record, but at the time it probably would have achieved it easily, probably measurably faster than Greenamyer's tricked out F-104.