Well i changed out the front tires/wheels with another set i had, replaced the inner/outer tie rods/drag link & steering box, front end is much tighter, also changed the rear tires/wheels, The shacking is still there, it is no better/worse, it happens around 60-65, I'm really puzzled on this, I do feel it in the seat though, The tranny mount is good, Is it at all possible that the transmission could be causing it? Like a bent spline, The only other thing is it has to be something in the rearend, i just don't know what.
I've also currected the pinion angle & alligned the rear tracking.
What else should i look for, could it be axle/pinion/carrier bearing issues, all this stuff is brand new.
One thing it does do, when i'm on the throttle hard its not that bad, but gets worse off the throttle when its at those speeds.
Just to clarify, Its not a "vibration", more of a shacking/wobbling.