The Laputa dub is on region 2, same as totoro.

The old kiki dub was a jal airlines one not done by streamline though released through them in the US in theaters i think. Same with Laputa. Totoro definitively is a streamline dub, or the fox dub.

Yes the track is in mono on the laserdisc in the right channel i believe while the japan is on the left, really not the best idea. The DVD releases are at least free of the noise and crosstalk. It would have been great if they were on seperate audio channels instead of spilt on a single one where the stereo track would traditionally go.