A site named RoseColoredGaming.com was a popular seller of these kits, as well as the already modded gba's with the backlight. They recently announced on their facebook page that they can no longer make them as it seems every single distributor is sold out, it seems they were selling an old stock from the first run of GBA SP's. So unless a company starts making GBA specific screens, or something else to use instead the only way to make one is to sacrifice a GBA SP AGS-101 screen and track down the ribbon cable (either 32pin or 40pin).