[Whether or not Tony's nod is meant as something equivalent to his bow, Emet absolutely takes it as one.  Even if he can't say he's thrilled about the bastardization of his name.]

Why should I have?

[He doesn't need them, after all, and up until now hasn't given much thought to sharing the details of his designs.]

I certainly suppose I could draw some up.  But you may have trouble with the fuel - it's something native to my world.