well first off i do have a lt1 a 93 z28...and when i am coming to a stop in third gear around 15 mph there is a klunk it sounds like it might be under neath me or a little more towards the back i was wondering if this is something i need to be scared of..like my tranny is going or is it just a hard downshift...someone another day sadi it is a hard down shift since i have poly-utherene tranny mounts????any help would be good