The UK VHS releases in 1995 had pitch corrected audio. I used the audio from these coupled with the video from the French laserdiscs to make my PAL laserdisc transfer DVDs.

To clarify the framerates, film is, and always has been, 24fps.

The PAL system is a 50Hz signal, 50 fields per second, equivalent to 25 frames per second.
To convert from 24fps to 25fps is a simple case of speeding the film up. Most of the time this is unnoticeable. (Alternatively you can keep it 24fps and mess around with non-standard pulldown and blended fields - but this looks a mess, and thankfully is very rare).

NTSC was originally 60Hz, but this was reduced to 59.94Hz when colour was added. That's 29.97 full frames per second.
A speed up from 24fps up to 29.97fps would be unacceptable, so instead a system of repeated fields was devised. You cannot simply repeat every fourth frame because the jerkiness would be a problem. What happens is every 2 film frames are split over 5 fields (3:2 pulldown). This keeps the jerkiness to a minimum (altough PAL users, who are used to smooth motion, can sometimes see the effects of pulldown on motion and camera pans.) You end up with 4 film frames spread over 5 video frames, equivalent to 4/5 * 29.97 = 23.976fps. (No-one ever complains about the slowdown from 24 fps to 23.976fps!)