[RunWithScizzors]

Here's a question for the historians out there.
I'm reading in Trevor Legate's book Cobra, The First 40 Years (pg 132) that when it came time to design the 'Mark II' Cobra, the engineers specified a 3" longer wheelbase. But... "When Negstad arrived at Thames Ditton he found that AC had already taken delivery of the main frame tubing, cut the same length as the original, since they found they could get a better price on that size and quantity."
Also, that the lightweight 390 CID engine was originally selected, but Ford's NASCAR customers wanted exclusive use of it. Ford made the 427 SO available instead, throwing his weight distribution calculations out the window.
(One wonders what ELSE was different.)

Q: Have Klaus Arning and Bob Negstad's original engineering drawings survived?