289 Top Speed?
Wasn't it something like Ferrari was running 180 and the 289 cars were 20 mph or so below that? That was the original purpose of the Coupe, to get that top speed up.
There are several ways to "work out the math" (coefficient of drag vs horse power primarily) and conclude it was impossible for Dick Smith to run 198 mph. However I DO believe he DID run that speed. So it's apparent to me that then and now CD is still not fully understood.
Cracker, I have no idea!
Mike, tell us more about that 260 run, sounds interesting!