No it's not possible, even if you try I think the MD5 Sum check would fail. Anyways sorry I haven't been active to help, but now I'm going to. First thing I'd advise is to reflash GB through KDZ. Then root it, install CWM. Then follow this guide to install CWM Touch just for the hell of it. [
http://androidforums.com/lucid-all-things-root/719365-guide-cwm-touch-flashable-zip.html ]
Next flash CM10 B2.
Then Gapps.
And finally the baseband
[IN THAT ORDER]
Goto the main screen of CWMT.
Wipe data/factory reset.
Wipe the Cache.
Goto Advanced > Wipe Dalvik cache.
Reboot the device through the main screen of CWMT.
Now the first boot could take a while, after that it should goto a setup screen and work perfectly!
That will get CM10 working fine...well should..as for the flicker I think just reflashing GB should fix that.