Got my copy a couple days ago but put it on the "unread" stack without even cracking it open till I saw your post. Just took a quick look and that's quite a nice write up! That issue just moved to the head of the line.
I've always thought that photo of Brook Stevens next to the '63 model was pure '60's cool, and those hooded headlights makes that model my favorite of all the Brazil designs.
I've been in an off & on discussion with a Darrin guy on whether or not the dual carb engine had a cam upgrade or not. So far nothing has turned up about a different cam. As a result though, my wife helped (for me) to painstakingly translate a few paragraphs gleaned from a couple Brazil Aero books a couple weeks ago and I stumbled across something I've always suspected. According to one book, the hood and door skins were the same throughout the entire production series.
Also included were photos of some Ford Aero prototypes, pretty much Aero bodies with something resembling Ford Galaxy front fenders, hood & grill.
Ford supposedly got the F-head up to 135hp, I think in the Maverick. Ran into cooling issues on the #6 cylinder so those engines had an external coolant line delivering more coolant to the rear cylinder. That engine also had a modern spin on oil filter at the oil pump, with the exhaust manifold dumping at the rear of the engine.
The Brazilians did some really cool stuff with the Aero and a lot can be found on Brazil websites. It's easy to copy & paste text from those sites into Bing Translator to get a pretty decent translation.