These all appear to be from the pre-SCANZ era, and most aren't 2-litre cars. Perhaps Steve would like to peel them off into another thread, and leave this one "pure"...

Either way -
Post 5: Lycoming Special No.1 (twice), an MGB GT, Rhubarb III? (Bob?), Ferrari 250LM, Scott Wiseman's E-type

Post 6: PMS-Climax?, JRM?, Lotus Seven 100 (Ross West?), Lancer 71, Wiseman again, JRM?

Post 7: first pic looks like a single-seater (which I can't identify), then Elfin or Gemco (they both at Gemco bodies at one stage, and I can't remember OTTOMH who ran 59)