We consider that custom DVDs are not substantially different enough from the retail release to allow for open discussion about their distribution. Any such discussion, including phrases such as "email me for details", will be deleted.
It is however acceptable to provide instruction so that others may re-create your project, using their own purchased copy of the retail DVD. If required, links to download custom made subtitles or unreleased/obsolete audio tracks (i.e. tracks not available on any retail DVD/audio CD) may be posted.
(And, for the record, I was thinking of getting the PAL DVDs to make an anamorphic NTSC version - with the original mono mix as an alternative audio option.)