For 1968-93 Stringer, Cobra & King Cobra 4-cyl, 80-140 Hp | 6-cyl 165-170 Hp V6, 150-165 Hp | 5.0-7.4L V8, 185-454 Hp gearcases.

also crosses with:
Sierra: 18-4248-9
GLM: 31171
Mallory: 9-60408