Adding Video to Factory nav system

[WHOSNEXT]

I’m going to add Video in and audio in to my 2006 h2 touch screen nav system to run movie dvd’s to the nav system, I cant decide which interface/converter to use, maybe you guys can help me out, I’m looking at the PAC GM2 Video Converter #VCI-GM2 and the SOUNDGATE VIDGM2 Video Interface? I know the PAC you have to remove a plate off radio and install ribbon, what about the soundgate? Same thing? And for audio there is GM Smart DVD Audio Interface #USA-SVG-707 and soundgate vidgm2. any thoughts on which one is better, less cutting of wires or user friendly, I’m not into more switches just want true factory fit and operation.