Yeah I'd find it hard to believe that DL2 could be ported to a disk based system with some massive cuts (or spanning across 30+ disks), as the game was huge! Grayscale? Why would they bother porting anything to the GS in grayscale unless it was some kind of Mac port? GS Kung-Fu Master? That wouldn't surprise me, KFM was ported to lots of systems (including the Apple II and Atari 2600).