Well you can probably make one fairly easily.
heavy wall pipe slightly smaller diameter than the ujoint bearing holes in the yoke.
nut and bolt combination where the nut can be inserted into the pipe(thread passage perpendicular to the pipe length, but cannot rotate in that orientation.
drill perpendicular hole thru pipe far enough from the end to allow the pipe end to just protrude slightly from the yoke opening when the hole is line with the spindle center.
grind slight point on bolt to hold in spindle end depression and protect end threads.
slide pipe into yoke, slide nut into pipe, insert bolt into cross hole and thread into nut. Apply grease to bolt point and screw in untill it engages depression in the end of the spindle
apply pulling tension by tightening bolt against spindle. ”Ring” the yoke assembly with hammer to help free spline engagement as you apply pull force with the bolt…