Ok yall. I have an '04 GT 5 spd. It has about 2500 on her and there is this wierd noise coming from the dash right around where the vents/ a/c is. Sounds like a very small marble in the bottom of a empty coke can. Also I've noticed when its cold out and I shift her into 5th she makes a noise like plastic gears meshing together. It only does it for about 10 min or so then clears up and it only does it till I get her up to about 1600+ RPM. I let the car warm up for about 3-5 min or so on cold mornings. Thanks yall.