I still my old one from a pre 74 3 speed that was cut to allow a four speed to move freely. You can have it for cost of shipping if you want. I have no need for it. You can see pics of it under my profiles thread postings.
Early transmission hump. For a 3 speed appears to be cut to allow the 4 speed to move freely. In good shape. Has been painted with cheap bedliner material. $300 and buyer will pay shipping.
Or pick up locally for discount.