! have an optional shift knob for sale. I bought it for my 66 tri power which had a Hurst shifter with a Muncie 4 speed. It is a walnut knob with R 1 3, GTO emblem in the center and 2 4 on the bottom of the knob> I have seen them on Ebay for $90.00 which I think is rediculous price. I will sell mine for $40.00 and $5.00 for shipping.