Atari 2600/7800 Video Mod Kit
If you are the DIY type, you can buy an un-assembled mod kit with all the necessary parts and install it yourself with the included guide. It will require some soldering/desoldering as well as slight modifications to the Atari circuit board and drilling holes in the case for the RCA mounts. Here are the Video Mod Installation Guides for the different systems. This kit will work on all 2600 and 7800 systems, including PAL as well as NTSC.