I have a large selection of gearsticks, approx 15, from various 71 boxes, A,B&C, they all have odd bends forwards, backwards, big bits of flats at pivot, and straight up.
The earlier 240 with a71a a longer box, the stick is straight, the later 71b the box shifter location was closer to engine, and to get stick i. Good psition, factory bented it back a bit. Some have S bends etc.
All nothing a bit of trimming a hole and screwing a bit of rubber flap wont fix
The factory competition option 1 2 3 boxes all had straight sticks, and a wooden knob, with a small silver metal button imbedded.