Olds/ Pontiac 9.3 inch ring gear, 31 spline third member with 5:38 gear set with an open carrier. Also included is Ansen Locker blocks that lock the open diff like a spool (I will not sell separate). 2 by Marty McFly posted Jan 22, 2018 at 10:42 PM 1 by Marty McFly posted Jan 22, 2018 at 10:42 PM 3 by Marty McFly posted Jan 22, 2018 at 10:42 PM 5 by Marty McFly posted Jan 22, 2018 at 10:42 PM 20180122_181133 by Marty McFly posted Jan 22, 2018 at 10:42 PM 20180122_181127 by Marty McFly posted Jan 22, 2018 at 10:42 PM 20180122_181120 by Marty McFly posted Jan 22, 2018 at 10:42 PM