Just go for a m3 non-lite.
It's cheaper and it will fit.
are you crazy? the non lite version has no gba support at all the lite version is the only one that has gba support, and the first poster didn't you do a search first? there are many topics concerning what flash cart to choose for your gba sp, use it, let me give you a head start, a G6 lite.
Hum...
QUOTE
Current M3 Versions
M3 Perfect - CF
Uses CF Media; Plays NDS/
GBA/Video/MP3
M3-Perfect - SDÂ
Uses SD Media; Plays NDS/
GBA/Video/MP3
M3-Perfect - Mini-SDÂ
Uses Mini-SD Media; Plays NDS/
GBA/Video/MP3
The overall size is a little smaller than the CF/SD version
M3-Perfect-LiteÂ
Uses Micro-SD Media; Plays NDS/
GBA/Video/MP3
Made to fit flush in the DS Lite GBA cartridge slot (Slot 2)
M3-Pro-MiniÂ
Uses Mini-SD Media; Plays NDS/Video/MP3 (no GBA¹); cheaper than the 'perfect' version.
The overall size is a little smaller than the CF/SD version
M3-Pro-SD Slim
Uses SD Media; Plays NDS/Video/MP3 (no GBA¹); cheaper than the 'perfect' version.
The overall size is a little smaller than the CF/SD version
M3-Pro-LiteÂ
Uses Micro-SD Media; Plays NDS/Video/MP3 (no GBA¹); cheaper than the 'perfect' version.
Made to fit flush in the DS Lite GBA cartridge slot (Slot 2)
M3-DS-Simply
Uses Micro-SD Media; Plays NDS/Video/MP3 (no GBA)
Same size of a commercial DS game (Slot 1)