i got this shaft which i believe came from a 71 d44 maybe drum setup. but not to positive bout the year ethier. i bought back a while ago and it didnt work on the truck.but cant remember why. i think the outter shaft wheelbearinng seall is differant or somthing with the outter shaft but splines fit. could i just swap out outers shaft??? it has a 30 spline inner/ 19 spline outer, shorty. i might of boght it on here a while back but not sure was a couple years ago. totally forgot i had it.