The only one I ever saw broke was broken at the shifter. The fool had a messed up clutch so he would start the truck in neutral and force it into gear to get moving and power shifted from there, up and down through the gears. After about a year (no lie, nearly a full year) he broke the shifter lever, which someone welded back together for him 2 times. He brought the shifter handle to me and I fixed it good enough he finally broke the shifter tower off the top of the trans.
Those transmissions are tough. Gene