but replacing the two files wasn't enough so I played some more and had success!
Getting LTE: Enter *#*#4636#*#* on the dialer and select "Phone Information" scroll down and make sure "LTE/CDMA/EvDo/GSM/WCDMA" is selected under "Set preferred network type:". DO not change anything else here unless you know what you are doing! DO not change anything else here unless you know what you are doing!
Make sure "Global" is selected under "Network Mode" in your Mobile Network Settings. Now enter your APN manually. BOOM you has LTE. I had to keep resetting from GSM/UTMS to "Global" after a reboot, this is fixed by the build.prop changes and factory reset.
Add or change the following lines:
then I removed every line that had "cdma" in it (except the one above)
Now the default_network setting will not be changed unless you factory reset after and if the rom does not have your apns "on file" you will have to fiddle to get data to work on a reboot. This is fixed by replacing the apns-conf.xml file found in /system/etc/ with one that has your carrier setting or editing the existing one.
Note: I tried doing an advanced data restore through Safestrap/TWRP and the connection on boot issue came back. Restoring with Titatnium worked fine
Getting wifi: you need a root browser for this. Back up your original ones by adding ".bak" to the end of the name. Download the zip attached (no it is not flashable, I don't have that expertise) and extract it to your phone somewhere. Copy the Set1 (cfg80211.ko & wlan.ko) files to /system/lib/modules then copy the Set2 (cfg80211.ko & prima_wlan.ko) files to /system/lib/modules/prima
Fix permissions and reboot. (I don't actually know if all four files are needed, just that it works when they are all there!)
"Wifi still isn't working!?" Compare the permissions of the new files to the old ones (you backed them up right?).
Getting rid of "This SIM card is from an unknown source:" delete VzwPhoneService.apk from system/app
Tested with "Foot Through The Floor", "wWidow" and "fusionHD" with safestrap.
mattlgroff for the clue that it was possible with his Batakang for Atrix HD release
Cambridge2009 for the hint where to start in their Atrix > Razr thread
droidrzr.com for their sweet roms!
pfak for their build.prop tweaks
Everything works flawlessly now!
I am not responsible for you borking this process and by extension your device, always have backups to save yer arse if you do. I have messed things up many times with many devices with no sweat because I consistently backup.