Hi.I have successfully install Mavericks on Dell E5500 thanks to DaFOB guide for E6400/6500/M4400 which you can find here.I just delete in the EXTRA folder the kext for LAN card and add the kext for E5500.Everything works perfect except for wifi( you can buy a compatible one) and the graphic card(Intel GMA4500MHD) where I have 1024x768 resolution.(Very sad I can't even change resolution through org.chameleon.boot.plist).
Here is the Extra file for E5500
Extra_E5500_10.9.zip