thump/knock noise in drive line I think.
Its a sporadic noise seems to increase in speed while accelerating seems like its coming from the front and i can faintly feel it in my feet. The ODD time I feel a very slight vibration (like 7 or 8 vibrations then stopps and repeats like that). I just took a buddy for a drive to let him hear it and it would not do it. Im thinking the front axle ujoints?