Would you be able to shrink the Vulcan shuttle down to .5" / 12mm length? That would put them at pretty much the same size as those seen in ST:TMP inside the inner hangar / cargo bay. They were roughly the same length as the ST:V shuttle, when sized against the ship interior. You could do them as a set of 4 or 6?
Anyhow, I'd love to see some in that size if at all possible! Please PM me if I need to pay anything extra for that.