1. Go to the working folder where you extracted your rom, inside you will find:
2. Then go to "system/app" inside this folder you will find all the rom applications(apks) you may also find some in the data folder if your rom has this folder.
3. Copy, replace, and change any app(apk) be carefull if you dont know what the apk is do not delete!!
LIST OF APPS YOU CAN DELETE - HERE OR HERE
If you can not find some apps in this guide then try opening all those app in your phone and see app name and icon or move those apps from system/app to sdcard and see what is not working...
can i replace system apps with it's update to update my Android version?