Pictures update.
All the usable tins (and some intake bits) that I could salvage out of the bunch. Only one that isn't in this picture is the under-pulley tin, and that's because I haven't pulled it from the engine yet.
And a close-up of the rear plate:
So, looking at this, we have an oil filler with a road draft tube and no provision in the tins for such. No functioning under-cylinder tins of any stripe, but the upper cylinder tins are good ones (complete with the vane inside) that just need a little light repair. Shroud is in good shape.
We need: later style oil filler w/out draft tube, carb preheat stovepipe (guessing that's what the extra hole in that tin is for), #11 and it's counterpart w/out holes, 2x #5, 1x #6, #9, #10, #14 & 15, #17, and #23 with provision for doghouse coolers. Sound right?
Before winter, if we want to hook up heat, we'll also need whatever fittings are needed to go between the hoses coming off the shroud and the heat exchanger inlets, but that's winter and it's summer now, no heat required (please, take some, I need to get some welding done and that's no fun when it's almost 100F)!