APK Question. topic

Hi, I'm running CM10.0 (4.1.2) on my t989. I have an old galaxy discover that is running 4.0.4, so I was happy to find that things like messaging and contacts are the same as the discover. The version of 4.0.4 that came stock on the t989 , even though is the same ICS version of android as the discover had a different messaging app, different contact app, and a few other differences (clock, gallery, etc) while I like the messaging app and people app from the discover 4.0.4 better, I liked the clock and gallery from the t989 version of 4.0.4 better. I have the flashable zip for the t989 4.0.4. My question is, can I extract the app's from that zip file for things like clock and gallery, on a pc, or using an app like apk extractor without having that ROM running? I know I can extract system apps from a running ROM e.g. I can extract messaging apk off of cm10.0 (currently running) etc, but I'd like to extract the clock and gallery app from the t989 stock 4.0.4 zip file and install them on cm10.0. Even if I manage to find/extract these apk's and install them will they even run? The clock app on the stock t989 allows you to set your alarm from any mp3 on your phone, while the one from stock discover (same as cm10) forces you to set whatever mp3 you want as alarm, as a phone ringtone first. Does any one of you fine developers know a way of accomplishing the extraction of apks from flashable ROM zips

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