yea i am thinking it got to be the trany. b/c my friend paul who had a 01 cobra was with me last night and was asking what that noise was, and he said it's comeing from that trans. It is possible to be the gears but i mean I have had them in for almost 6 - 7 months and i don't remember hearing it. Anyone know where i can get a T-45 rebuild kit? I know they sell a T-5 but ford told me I have a T-45 and it would be chaeper to rebuild instead of finding a new one?