When I am travelling at speeds above 65mph my entire car vibrates. It is felt in the steering wheel, and shifter. and the overall ride of the vehicle. It only occurs when I press the gas to accelerate. If I am travelling at 72mph and I release my foot from the gas the vibration does not go away 100%, but it's greatly reduced. I bought new tires, mounted and balanced. Had the right and left inner CV joints replaced and the vibration still exists.
What is causing vibration at speeds above 65mph? on 2007 Honda Civic
Best thing to do is to have the car put up on a lift and then drive it up 65 mph and see what is vibrating. You can check each axle individually as they spin up to 65-75 mph. That is what I do in the shop. You had the wheels balanced, your tires are new, I would have replace both axles, not just the inner joints ( same price, or it should be ). You could have worn outer CV joints, that could be why the vibration is so pronounced under acceleration and decreases when you let off the throttle.
People don't have that kind of money to replace axles like you. Could it be something less expensive?