InstaDMG 10.8_vanilla.catalog for 10.8.3. Tested/works on real hardware.

10.8_vanilla.catalog

# $Rev$ from $Date$
# Catalog assumes your InstallESD is at the lastest build available on the Mac App Store. If you are on an older build, uncomment the combo updater.

Installer Disc Builds:        12A269, 12B19, 12C60, 12D78

Output Volume Name:	Macintosh HD
Output File Name:	10.8_vanilla

OS Updates:

# OS X Mountain Lion Update 10.8.3 -  http://support.apple.com/kb/DL1640, http://support.apple.com/kb/HT5612
#	OS X Mountain Lion Update v10.8.3 (Combo)	http://support.apple.com/downloads/DL1640/en_US/OSXUpdCombo10.8.3.dmg	sha1:1bc49fde5ff6e252aa7908b4cb1f9cb9c8a5fa29

# Safari 6.0.3 is in the 10.8.3 combo update 

# iTunes 11.0.2 - http://support.apple.com/kb/DL1614, http://support.apple.com/kb/HT1222
	iTunes 11.0.2	http://appldnld.apple.com/iTunes11/041-9794.20130220.DdPy6/iTunes11.0.2.dmg	sha1:e8eba6c2b83b9e24116a9944c808525bed260aa0

# Java 2013-002 - http://support.apple.com/kb/dl1572, http://support.apple.com/kb/HT5675
	Java for OS X 2013-002	http://support.apple.com/downloads/DL1572/en_US/JavaForOSX2013-002.dmg	sha1:47e38cf089a6a7bba9e2b0b387fe09e2b77e10a6

# Airport Utility 6.2 - http://support.apple.com/kb/dl1628
	Airport Utility 6.2	http://support.apple.com/downloads/DL1628/en_US/AirPortUtility6.2.dmg	sha1:0c29c371b54413a3b1374174f52ab7b74e587c5c

Included Airport Utility 6.2, reformatted it to include support links

Nice work! Any reason why the 10.8.3 update is commented?

very cool. thanks for updating it too.

@JakeHertenstein the combo updater isn't needed if the Installer Disc Build is already at 10.8.3

@zdw thank you! You've saved me from having to track these down. Now I might hit my deadline before the new employees start on Monday.