The workprint is dupey, of course and very unfinished (lots of storyboard scenes), but there're a lot of extended scenes as well as an alternate ending.
I remember Fangoria saying at the time that the movie was "Unreleasable, except maybe on a double bill with 'Plan 9 From Outer Space'.", and, indeed, the workprint makes the film look pretty uncommercial. Post production did a great job in bringing the film to life. Puns.