Regarding the 11L43 chassis. It is a bit of a mystery as it seems no official service info was produced. Nor is it covered by Sams and Riders service info had ceased a year or two prior. I imagine everything was scrapped at Philco when Ford took over.
I've reverse engineering bits of it. Notable differences being the elimination of the local/distance switch and a new tuner. The new tuner has different power requirements so there are some changes in the B1 terminal strip wiring.
Here's the tube chart and my crude diagram of the B1 terminal strip wiring changes.
