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
NOTICE

IF I HELP YOU WITH ANYTHING (first, hit the thanks button) AND YOUR DEVICE ENDS UP BRICKED, I AM NOT RESPONSIBLE FOR IT!!!
Just want to make that clear

DEVICE: AT&T HTC One M7UL/Silver/32GB
RETIRED: HTC Inspire 4G/Desire HD
NEXT/DREAM DEVICE: Any Android device with the resolution of 1440 x 2560
ROM: I dunno lol
KERNEL: Does it matter?
S-OFF

MY WORK: