READ before you post!!!!! It has absolutely nothing to do with teh rpm's, it's teh speed i'm travelling at. I'm getting teh passenger side AXLE replaced soon anyway

 

I had somethign like this on my old car could it be you have a bad distributor cap? The cap and a small hairline crack that was leaking out all the current and the contacts were badly pitted.......just throwing out suggestions.

 

I also had really bad shaking......but that was more related to a bad motormount....