you don't need one but for peice of mind ... the cams will turn maybe one tooth with the belt off, just mark the cam position before removing the belt and make sure that is lined up when a new belt is put on
- 95 Mystique LS - Zetec/5spd
- 99 Contour SeVT Sport - Duratec/5spd
Official NE-CEG Contour/Mustang Family