727 - Driveshaft Jammed All The Way In

There are at least 3 different yoke lengths avail.
That looks awfully long, but hard to guess .
Good info - I guess the question is now that the old rear is out and after the new one is in - will the longer yoke be an issue? I can always measure to account for the longer yoke and have the driveshaft shortened accordingly. I will have to poke around and see.