Lift induced vibration

[Matt]

Vibrations constrained to specific speed ranges are normally a balance issue; resonance.

However, 15-25 is also normally an 'acceleration" zone and vibrations during acceleration are often due to worn components (u-joints, cv axles, etc).

It's possible your stock CV axles were on their way out. When you swap the RCV's out put some new axles back in. Since you already replaced the front driveshaft that'll help rule out the worn components.

[Gulf550]

Thanks Matt. I appreciate the advice. Since I dont know how long RCV performance would take, I thought about ordering some cheap ones, installing them and see what happens.