vibration

1997 accord lx 4cyl, 5sp, has vibration under acceleration, have replaced both front axles, both wheel bearings are good. Tires just balanced last week due to this but balancing did not help. The car is on jack stands now because I thought I might be able to see something vibrating by watching the turning drivetrain, no luck.
Does anyone have any ideas/experience?

I Had That Same Problem And Depending On The Tire Quality It Might Be That Your Tires Have Flat Spots. Not All Tires Are Perfectly Round. It Could Be So Good Luck