My 93 WRX has suddenly started giving an intermittant vibration from the rear end (I think). It occurs either on or off throttle, at high or low revs. Could it be torque related? I've checked all the suspension, transmission bushes, propshaft bolts, gearbox mounts, exhaust and now i'm baffled. I think that if I take it to a garage i'll get the 'Wait till it gets worse' line. Anyone had anything similair? Heeeeeeeeelp!!!