1966 Driveshaft - Which End is Front?

Now that you mention it, they do stick out farther than what I'm used to. But the clips are in them, so they must be in far enough.

This is what they show on RockAuto.com:

MOOG/PRECISION Part # 246 Greasable Super Strength
http://www.rockauto.com/catalog/raframecatalog.php?carcode=1329083&parttype=2392

I guess sticking out farther makes them "super strength". Makes sense I guess as the needle bearings would either be longer, or further from the centerline, reducing the load on them.

They cost $13.50, versus $9.76 for the cheapest ones.