Default [Q] Carrier specific ROMs

So I found this Google Play Edition ROM port from the M8 (http://forum.xda-developers.com/show....php?t=2531235) and unfortunately it is specific to the Verizon(CDMA) carrier and I was wondering if there was a way to port it to AT&T(GSM). I already tried the APN editing and it did not work. Any help would be greatly appreciated.

Thanks in advance.

Sent from my HTC One using XDA Premium 4 mobile app
PHONE:AT&T HTC One M7UL/Silver/32GB
RETIRED:HTC Inspire 4G (USA)
NEXT/DREAM:Any Android device with the resolution of 1440 x 2560
ROM1:ViperOne
ROM2:SinlessROM
MULTIBOOT
KERNEL:ELEMENTALX

TABLET:Nexus 7(2013)/WiFi/16GB/Black
RETIRED:HP Touchpad/32GB/ANDROID/WiFi
NEXT/DREAM:HTC Nexus9
ROM:AndroidL Enhanced
KERNEL:Glitch Kernel

MY WORK