... A Clue:  

First off, thank you to everyone who looked at the trivia challenge and gave it a shot, or at least enjoyed looking at the pictures (lol.)

Secondly, as Pee Wee Fan mentioned, if we tried taking away the #'s and the stripes on today's car, I don't think we'd be able to tell one from the other... And rather than knocking what today's dirt cars look like, I'd rather focus on how lucky we all were to attend races where the drivers had unique personalities, and so did the cars....  Back in the 60's & 70's, we left the races thinking of our favorite drivers, and ALSO thinking about our favorite cars.

...so, here's a clue to our Trivia Challenge.. (actually, it's a little more than a clue, but here's the reveal for the last picture to see if it is the missing piece for some of you guys trying to figure this out):

Phil Meisner at Flemington

So... for those who knew the other 5, add "71" and let us know what you came up with...  

If you're still working on some of the others, stay tuned as we'll reveal them one by one as well over the next few days.