How to make a Lion install disk for a Mac Mini from a Mac Pro
If you have the latest "Install Mac OS X Lion.app" procured from the App Store, then you could use the InstallESD.dmg within that to make a universal installer (described elsewhere) -- it will have all the drivers needed for any/all Macintosh machines that meet its hardware requirements. Note if you're handy with SSH, ARD or other methods to remotely control the machine in question, the upgrade/installation could be entirely remotely.