2004 Dodge Ram – sever Vibration

Just bought  it, four dr with 52k miles, needed front brakes, front tires, front shocks which I just did to night. Took it out for a test drive and for the first time I really got on the gas . It has a terible vibration that resinates throught the whole truck when I kicked it down up to 60 mph until I let off.

When I drove it without kickin down the gas it was smooth, would this be broken motor or trans mounts or what???

 Any help would be great!!!

Thanks