Thanks for the additional info, guys. The two-bolt distributor that I looked at yesterday must be Ford made because it has the vacume brake adjustment, and looked like the one from the patent drawings you guys linked me to. The distributor was offered to me as "rebuilt," and for a for price of $100. It looked pretty clean, still being in the box of the rebuilding shop and with a 1999 date on the newspaper that was used in the box for padding. I did notice that on one set of points, the contact surfaces were not parallel when open, so perhaps even if rebuilt, the distributor needs some adjustment due to being man-handled a little in the 15 years since being rebuilt. Ebay shows them starting at around $60, so $100 must be a reasonable price, especially if it has been rebuilt well, wouldn't you think?