Is it just the issue of having to replace U-joints more regularly on a race car while gaining a tiny bit of power not used to work them so they stay free? Should I aim the trans at the pinion and let it eat? Or is it worth the half a pony or whatever to make the needle bearings spin enough to be happy in the U joint cups?
You seemed to be worried about one thing, the needle bearings not being rotated enough. Don't Worry about that. The Dynamic movement of the axel and driveline will always keep them moving no matter how straight you align them. Unless every driveline angle is welded made 100% solid, the needle bearings will see Movement, period, don't worry about it..
