These sites list subtitle files specifically named for the BluRay and x264 releases you mentioned:
: Offers English subtitles specifically tagged for Original.Sin.2001.1080p.720p.BluRay.x264.[YTS.AG] . subtitle Original.Sin.2001.1080p.720p.BluRay.x2...
Searching for subtitles for the movie compatible with high-definition releases (1080p, 720p, BluRay, x264) yields several reputable repositories and specific file matches. Direct Subtitle Matches for BluRay/x264 These sites list subtitle files specifically named for