my 90 model 300zx seems to suffer from a drone ing type vibration at 90 to 100 kmh . this becomes quite annoying on long trips . have had tail shaft balanced twice and vibration still there . if any one could offer some some sugestions would be great thanks brett
your unijoint may be stuffed....you could either get that replaced or opt for a new one piece tail shatf....also, are your wheels balanced? how is your suspension?
