Beverly Hills Bodysnatchers (1989)

A doctor and a mortician have teamed up to do reanimation experiments on corpses using gangster money loaned for remodeling When they cant 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 reanimated