1) Thanks for the info! I think I was probably being a bit naive - I was picturing something along the lines of "The Big Book of Sports Car Racing in the 60's", by in reality it sounds as though you've spliced the information together from all sorts of sources (many of which take some digging to track down...Which makes P&G sound even more impressive now!) What if I narrowed it down to the Lotus Elan - do you recall some helpful source materials for learning about that particular car?
2) That helps, thank you. I'm interpreting this as, if there is a specific/definitive answer on what the real car ran, it's noted in the game. Where it's not been noted, it is because it varied from car to car based on team/driver preferences, available parts, etc.