I'd agree if the conditions were at any speed, gear - time the vehicle was moving. He said it was only under acceleration/load. So, that's pointing to load sensitive areas. ( it could very well be shaking at anytime, however, it's amplfied under a load )

 

It's in the driveline. Jack it up, and crawl under it. Grab the drive shaft and twist/turn and shake like you were whipping a red headed step child. If that is tight,. then put the car in neutral and manually turn the driveshaft back and forth to see if there is slack/play in the rear and/or tranny. I can almost guarantee you that the U joints are shot and need replacing. I play poker on Friday nights too.

 

Bulldog
I don't know what post you are reading but, read the first one again, This time get a little closer to the screen and put down that waffle. Just kidding.
It's not load, it's transition from coast to load, that area wear your like on cruse.
It could even be the 'Off Idle circuit' in the carb.

 

Alrighty.

This was a direct quote from the OP.

**The thing is pretty smooth up to about 45 50 mph and if im not giving it any gas at all its nice and smooth but i can BREATHE on the gas and the car just shakes like crazy.. **

Has nothing to do with cruising, waffles or whatever it is you're smoking. Has to do when the car is under a >load< or accelerating.

It's ok though. Us old folks do have eye sight problems, that's corrected with a prescription lens thatI wear. I'm not aware of a cure for being eat up with the dumbass. (j/k)

IMO, of course.