Hard Boiled is quite straight forward. Tho there are a few cuts here and there to make it gel properly. I have only synced up a version of the mono ac3 track from the criterion DVD tho, I do not know how much the laserdisc PCM version may differ.(I gather this is the one you are using)
As for Police Story, the subs from the U.K HK legends DVD are the best place to start, as I believe they tried to re-create the original version for there release.
Best of luck with the project.