Does anyone know if the accessory idlers for the inside serpentine belt(water pump, ac, power steering) are the same on an 03-04 as a regular GT? I'm talking about the tensioner idler, the one above it and the one above the water pump. I know the one above the water pump is ribbed. I saw this SHR Mustang Tru-Billet Idler Pulleys - Silver Anodized S95-1846-3 (99-04 GT) and was interested in cleaning up my pullies as one is starting to squeak. I know i can get the bearings cheap to swap out but I figured I'd get some nicer ones. Any thoughts? I don't have power steering so I don't need the idler between the water pump and power steering pump.