Yup. Correct on all counts. Brake setup is shared. Those years are fully compatible. Bolt pattern is the same.
If you have time to keep looking, some '99-'00 wagons were built with the Dana 70 housing, but had a hybrid carrier and the smaller D60 gears. But a simple carrier swap brought it up to full D70 spec. My van came with one of those axles. I don't know if the BOM has the housing indicated, but it did have the D702U stamp on the center casting. I was never able to read my axle tag (bought the van from Enterprise with 100k+ on it).
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2000 E450 dually V10 wagon
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