Oh, right, it would be better but I don't have the NTSC audio. So, if you have the NTSC GOUT, maybe you could rip it yourself.
Or if Chewtobacca says he can't do it that way, I ask anyone who has the NTSC GOUT to please extract and upload the audio somewhere.
And if that doesn't work, there's always the possibility of just demuxing the 2.0 audio from ROTJ PDE and using that (it is a PAL GOUT audio conformed to NTSC speed, so it would only spare you the conversion).