Beverly Hills Bodysnatchers (1989)

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.