teardown was too rusty/dirty to see anything well enough to make sense of it.

I never had front drums before.

One spring that came off doesn't resemble anything in new hardware kit. No idea where it goes.

thanks.

This is one of a great many reasons why you really need a proper service manual.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Wow!
Should I be feeling "old" if I'm surprised by that statement?

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63 Valiant Wagon
225 - 4 bbl

I have a diagram from the factory service manual. PM your email address and I'll send you a PDF.

In the future, it might behoove you to clean the item being rebuilt before disassembly and take a few pictures of the unit still assembled for reference. At least until you get a factory service manual.

Do one side at a time!

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'72 Duster 198 stock cam, 3:23's

93 D350 Cummins THD Maxfuel 35mpg parts to hit 400hp+ Suncoast Cat2 A518, converter DDP Stage III injectors 62/64 HX35, 3 piece manifold, 4" Diamond Eye, Gear Venders OD. Stage I street/tow PDD head on order.

Thanks Slanted Opinion.

I won't need it. I figured it all out.

Mystery spring was really just a broken spring.

(One side at a time was not an option as I had to evaluate what was salvageable before making the decision to temporarily restore 9" drums, or do disk swap first. As it turned out, I got by with new drums, hardware, self adjusters, lug studs, wheel seals and wheel cylinder kits and some shop time to press/swage/cut. Had I needed much more, I'd have abandoned the drums altogether.)

Thank you everyone for your replies.