I have put a lot of miles on my truck in the last year (I usually average about 70k a year), but since I bought it, we also have bought another car... my daily driver. I plan on buying the DynaTrac kit after XMas (hopefully a group buy again?????)... I like hubs anyway. I actually might be under 30K this year on my truck!!!
I will also state this: the steering/handling is MUCH different with the DS in than out... with it out, the truck tracked very straight, was easy to control, easy to steer... installing the DS netted me wandering on uneven pavement a heavy feeling steering wheel, and stiff turning. All in all, it was much nicer to drive without the driveshaft... if it wasn't for winter right around the corner, I'd take it back out.
So, I am out at this point... no more throwing $$ at it to find a cure... just going to dynatrac it and call it a day... figure about 100k for the kit to pay for itself in mileage, not including no bearing replacement (in the tcase, diff, or wheels)...
And so everyone reading this realizes this... I have a manual... I know I read a thread on this board that claimed the vibration only affected autos, well, here is the oddball.
steved