I have a ford 9" rearend that i took out of a 79 Bronco and swaped it into my 90 bronco. I blew the end off of the trax-loc carrier on the ring gear side. I went to swap in an open diff carrier for now but when i went to bolt the ring gear to it, all the bolts except for two would thread in. I tried clocking the gear but the same two holes on the ring gear wouldn't line up. So i went ahead and bought a spool to put in but the same thing happened. I noticed that the 4.11 gear out of my rearend was twice as thick as the gear out of the other rearend. I talked to bronco graveyard and they couldnt figure it out and i really need some help with this.