If i want to go back to stock on my 2000 gt, with the idler pulleys I have 1 stock one laying around. I know 2 idler pulleys go back to stock locations. The pulleys on my car now, are they vortech pulleys the ones that need to be swapped? Am I suppose to have 2 idler pulleys laying around. I just want to make sure cause I will buy another idler pulley, but i dont know if the stock one is on the car just in another location.