Exact pour GT4 NTSC Japon :
" option de gt4 jap..
title: Gran Turismo 4
region code: NTSC-J
catalogue: SCAJ-30006
progressive scan: 480p or 1080i
aspect ratio: 4/3 or 16/9 (16/9 is anamorphic in NTSC mode)
surround sound: Dolby Digital for movies, Dolby Pro Logic II for realtime sound "