Any way reinstall the old iWork in Mavericks?
The Mac App Store updates to iWork should not have replaced the original iWork '09 apps.

The original apps should still be available under /Applications/iWork '09 as well as if you search for them in Spotlight - just look for iWork '09 next to the name if you decide not to delete the newer versions.

If for some reason you have deleted the older versions, you can grab them from a Time Machine backup or reinstall them from a retail CD if you happened to buy them that way.