I agree with Gary. It sounds like you've got a GREAT project, Jim.
While FoMoCo y-block information and insights are part of the exchange of information here, anything y-block related is of interest and welcomed for sharing or discussing.
I've found this Forum to be a tremendous source of others technical information, knowledge, and unvarnished hands-on-experiences that have provided me with insights that have saved me time, missteps, experimenting, frustration, wasted money, and other headaches.
I have the highest regard for the many Forum members who generously contribute to this web site and my efforts as a hobbyist working on a y-block related bucket list project. Former members have left us the Forum Archive which is an invaluable resource, too..
Keep us abreast of what you're doing, Jim.
NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York