The complete version runs at about 104 minutes, a full 15 minutes longer than the edited R-rated version.
The R-Rated VHS by Troma has only been censored by approximately forty seconds:
the tongue pulling scene.
the scene where Nancy separates the Siamese twins with a sword.
The BBFC 18 VHS cut has 13 minutes and 57 seconds removed (the equivalent to the R-Rated cut) - eliminating much of the graphic violence and the rape scene.