1998 Mitsubishi Eclipse bad shakes

Drive Train Axles Bearings problem
1998 Mitsubishi Eclipse 4 cyl Front Wheel Drive Automatic

hi guys, my eclipse shakes real bad under acceleration at mph over 35-40 when I let off the gas it stops. For instance I get the car to 60 and it feels like it is going to throw me out and the wheels fall off. When I let off the gas and just coast it rides smoothe, touch the gas again no matter how slight it starts again. I just replaced the motor mounts, spark plugs and oil but that didnt seem to work. I also just had tires put on and balanced. I do have a little play in the drive axels where they enter the tranny but not sure how much is ok any help on this would be great as I am at my wits end with this thing