Onebad S4

What all is needed to recode a 6sp A box ecu to a H box 6sp?I saw the recode via vagom on the S4 wiki pedia page, so i know its interchangable to turn on the esp/hitachi. Will i need to change anything else? And after the change, will it essentially be a H box? Any help is appreciated, new to the recode thing.

I bought a giac X box, thinking it was a H box for some reason. Just want to make sure i can recode it to work. Also, for the tuners, will there be anything different from a normal h box after i recode it? thanks!