There isn't anyone left alive with firsthand knowledge of Model A and B engineering and manufacuring changes. Ford's public offerings (parts books, bulletins, change orders, etc.) are not well organized, are not nearly complete enough to support detailed restoration, and in fact had purposes entirely different than ours. Ford was interested in function and to some extent updating...if you had dropped off a thoroughly thrashed 1928 A at a Ford dealer in 1932 and given the dealer a blank check to tear it down and rebuild, what emerged would sure have not been a restoration by modern lights.
ALL our information comes through others now (apologies if there are any 130 year old Ford engineers or plant managers here), and has to be extracted through nearly inaccessible paper and from studying ancient iron. Like Vince, I have been through gathering Ford paper over many years (not sure of the count, but I have '28-32 literature from at least 8 different countries now, ALL of it offering tiny bits of information not otherwise findable), fragments gathered from old non-Ford garage magazines, torn boxes with numbers, and a basement full not of just paper but of a sort of iron library. I have left quarts of blood in ancient rural junkyards over the years, and have lived on Ramen Noodles a few times when I found a unique but wildly expensive bit like a salesman's manual or obsolete bulletin page.
A lot of this stuff is only accessible to normal humans who would buy groceries before buying a service bulletin (the weak, the many, the normal!) through folks like Vince and Marco and the other hardcore researchers on here. I cannot imagine the work they put into getting their knowledge online...I can barely keep such stuff stacked neatly in my basement and don't even know how I would make it usable by the world.
These guys have thousands of dollars in ancient paper, years of contact with other researchers and piles of ancient iron, and they are publishing it for us to read FOR FREE. And people are complaining because their information from the untouchable past came from...gasp!...the PAST?
If you feel like that, go back to your cage full of bad parts and information from imbeciles and fling dung at the tourists.