#102 looks like Jim Carney in the Escort he passed on to Jim Richards, #96 Rodger Anderson and #103 Graham Watson.
#77 May well be Dave Simpson in his brief foray as the first pedaller of the new twin-cam Escort, but my memory has him as racing #100, so the #77 car might be Jack Nazer. The #81 Imp might be Peter Levett...
Always good to see those old pics of Red in the Mustang, for many he was the first of the folk heroes in the big saloons, an abrasive personality but hard as nails on the track with LOTS of sideways action, all the while powering through massive amounts of chewing gum, a pack at a time...