Yeah, as long as the both types of Contour use the same battery, then it should fit both. But it was designed on the 01 Cougar (which happens to have the same battery tray as many of the Contours) hence why I brought the gauging of GB interest here too.
EDIT: I just looked at the picture for the battery hold-down in the 1997 Contour off FordPartsOnline.com and it looks to be the exact same as the Cougar and the 99+ Contour..