I guess I just don't understand what other evidence for Vimanas you'd expect to see here, aside from one of the craft or its parts (which would render the discussion moot).

If you're asking whether I view the texts and descriptions of Vimanas as examples of advanced tech, I believe I've answered that already.

Saying "There is no evidence that Vimanas are examples of advanced technology," to me, is a matter of perspective.
If one allows the possibility for ancient astronauts visiting earth, as I do, then it seems the descriptions themselves are what constitute evidence, circumstantial indeed.

But again, this is a matter of perspective.

So, Yes I think the descriptions of Vimanas represent circumstantial evidence for advanced technology and No there is no other evidence to show Vimanas are examples of advanced technology.

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