I'm here to speak about porting Touchwiz on Hammerhead.
I tried two times to port Touchwiz, but each time, it wont boot. I used the Kitkat stock rom of the Samsung Galaxy Note III because Note III seems to have an hardware similar to Hammerhead. You can download the rom Here.
The base rom i used is the Hammerhead 4.4.2 stock rom downloadable Here.
I can't edit the kernel so i tried with the kernel included on the stock rom zip.
Here's the rom !