Downloadable XP updates package beyond SP3?

[SVTarHeel]

MS continues to offer Security Updates for Win XP SP3 (but not SP2), and will do so until mid-2014. If you have Windows Updates set up to access them, you should be offered what MS considers Critical/Important.

True, but with clean installs of XP + SP3, there is still something like 100MB of additional files to download for each system. I'm looking for a way to have a good portion of them available to install offline so that, when I do connect the system to the internet, there are only a few newer files for Windows Update to fetch. It looks like AutoPatcher might fit the bill.