Would anyone know what the diameter of the shifter knob i need for my stock 1987 cutlass 442. i dont have even the slightest clue how to know to measure it, at least without the right tool. When i got the car, the transmition was redone the dingdong last owner took off everything and never put the shifter knob back on.... and he doesnt have it. just wanted to know before i go out and buy the wrong one.
