Both the SGX and SuperCDROM have video-out jacks, but the video is brighter coming out of the SGX. If you do a S-Video mod, you might want to put the circuitry in the SGX, because you can actually open that system up with a gamebit. (I put my RGB mod inside of my SCDROM attachment because there's more room in there than my PCE, but the screws are a very nonstandard type that will give you problems.)