Sorry Dan, missed your post. Not read Howden's book yet, currently on Tony Goodwin's story, Howden's next!
As the season is kicking off over here I reckon I ought to post some of the pics from my early start in NZ. To get you in the mood while I rummage through my phone here's a bit of in-car footage from Ruapuna viewed from Michael Sexton's Stanguellini which was 1 of 3 front-engine cars involved in a midfield tussle for the first half of the race. I started at the front of this scrap, and finished at the back handicapped by having to hang on to the gearstick to stop it jumping out of gear through the corners. Driver's Excuse book page 24 number 6
Robin Lackford in his Elva was the other participant.
https://www.youtube.com/watch?v=v1bmYvLjqG4