The Unrated Version features nearly six minutes of added footage, mostly violent scenes that were cut out for the R-Rated version. Sometimes alternate footage was used to ease the tone.
In the UK the movie was also released on VHS in a censored version, that is based on the R-Rated cut. For this VHS release by Columbia approx. Approximately 10 seconds of visual cuts were made, with a further 60 seconds or so of audio cuts/substitutions. Again one can find a detailed comparison between the censored R-Rated VHS and the R-Rated Version with pictures over here.