Converting 25fps PAL film footage to 3:2 pulldown 29.97fps NTSC footage is very easy, just rescale to NTSC size and set the playback framerate to 23.976fps, then after mpeg2 encoding use pulldown.exe to add the 3:2 pulldown flags to the mpeg2 stream.

The PAL & NTSC versions have the same framecount, but to make the NTSC audio match the PAL playback you have to speed it up by 4.096%, a drawback is that this also increases the pitch, I tried timestreching the audio with a few different 'main' audio editing applications to preserve the pitch but it introduced glitches into the audio, not noticable on speech but with orchestral music you can hear them, which I wasn't happy with so I left it with the slightly higher pitch.

In the case of my ANH, the NTSC version runs for 2:01:18 and the PAL runs 1:56:06.