it does slowly change as the speed increases. it hits some kind of resonance at 30mph and 60mph.
it does go away completely when i let off the gas. i was beating it today and it didnt get any worse or better nor break. lol. if it gets really bad, ill just go to the jy and get another rear end. no biggie.
id like to get the 4.30fd rear and front diff from the automatic so i get less revs on the highway.
Brian