Originally Posted by Speedy4x4

Why is it that all the driveshaft calculators I have found d say that the oem driveshaft should not be in our cars?
and that it should have vibrations for cruising at over half critical mass
the 2 piece and size of the shafts.

someone please let me know if you go d a place that says otherwise.
well in numbers not my buddy said ahhh it be fine.