Found this in a record shop a few weeks ago, and it looks fucking amazing! Starring Vic Tayback and Frank Gorshin! And the fact that everybody hates it probably means it's actually really good, because people don't know shit! Check out this write up on IMDb by Ed Sutton:
A doctor and a mortician have teamed up to do re-animation experiments on corpses using gangster money loaned for "remodeling." When they can't pay it back, the Mafia guy sends his nephews to work at the funeral home to keep a watch on the debtors, but the nephews end up helping in the search for new bodies, and mayhem ensues when some undesirable types are re-animated.