vibrates like in the body or in the susenchen?can you feel it in the sterring?in the break pedel?or both?if its both it is out of balance.sterring.could be bushings.pedal could be a combo.need more info
try a elecric fuel pump you can allways take it off.double check your coil wires both positive and negitive look for breaks in the insullation make a very big differnce.have you rebuilt the carb?