I got the B&M plate with the notch cutout on it to run a converter with no weights. The motor is a low mileage 29K,360 with the balancer that was on it when it was pulled out ..And I cannot spin the converter because it does only bolt on 1 way..The vibration started after I changed everything,removed the 318 and trans, and put the 360 in with a new rebuilt 727. I think I can rule out u joints and wheels, as the vibration is there when sitting in park..Maybe the converter is junk. its a GER, and I guess they are out of business?