Wizard of Draws wrote:

I assume the answer is yes, but I'll ask it anyway. Are the plans and
drawings still available to rebuild these planes from scratch?

The stumbling block there is the limited supply of Packard engines. It would be
astronomically expensive to start making those again.

George Patterson
Why do men's hearts beat faster, knees get weak, throats become dry,
and they think irrationally when a woman wears leather clothing?
Because she smells like a new truck.