72 chevy pinion yoke needed

[72frmtrk]

I need a new or good used pinion yoke for my 72 chevy 3/4ton 4x4 truck. It has the big 10 spline pinnion gear. I think its an Eaton rear end, 10 bolt cover. Does any body have one they like to sell or have an idea where I could get one? Mine is grooved out where the seal rides so it leaks. Sadler power train can't get them anymore they are obsolete. A speedy sleeve will not work because the yoke shaft is bigger in diameter than most yokes these days.