Stew - I had a problem with vibration under load in drive while stationary at lights and also in the speed range of 90 to 120 km/hr - after a non productive visit to the Ford dealer I went to a loacl performance workshop and we discovered that the primary cause was us engine mounts, These engine mounts are oil filled and hence have hydraulic dampering effects once the oil is lost and the rubber tears at bit the engine starts to rotate around the mounts.