When you quote a reasonably large IT quote, and they email you back asking for model numbers, what that means is they want you to use your expertise to put together a solution so they can then take all your hard work and punt it around.
That's a black mark against them, then.
stannard mastodon (AP)
a friend of mine in the oil industry told me he always put a deliberate error in the spec for precisely that reason.
This is precisely why I tend to leave model numbers out.