This rom was Listed by: XDA FORUM all credit goes to him.
This rom work on Gionee p3 with custom recovery installed.
Features:
CARBON EXTRAORDINARY FEATURES
CM Features + Theme Engine
True Unofficial Lollipop Taste 
Dual SIM
ROOT
What is WORKING.
SystemUI :V
Wifi
Bluetooth
Phone calls + Message
BUGS:
This rom still has the WIFI Tethering Hotspot bug i hope they find a way to fix this soon.
How to Install:
Backup IMEI by anyway [MobileUncle or NVRam TOOL]
Wipe cache, Dalvik cache, data, system
Flash the ROM
Flash GApps
Restore IMEI
REBOOT…………..
Will USSD work on this rom?
Yes it will work, try it out.
best rom
best rom