Hi Bob, Here's a nice shot of the group out on the track. I can't remember for certain if you were in the dark blue Cobra or the silver Bullet at this point. I think it was late in the day on the first day, however.
This shot gives a pretty good feel for the elevation changes and the "technical" aspects of the track.
I noted in this month's Road & Track that Phil Hill writes a "then and now" type article about the La Carrera Panamericana. If you've not watched that video yet, this article will whet your whistle!