Hello Derek, Make sure your shifter top yokes are in neutral, they are in neutral when the outside of the 3-4 yoke to the outside of the 1-2 yoke is 4-7/16".
Then based on the third picture, your 3-4 clutch slider is indeed in neutral, move (slide) the first gear forward on the mainshaft so outside of the 1-2 shifter groove is 4-7/16" to the outside of the 3-4 clutch slider, then drop the top loader yokes down over the sliders while making sure the reverse lever fits inside the head of the toploader. Done deal

Steve
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Last edited by sstock; 08/07/2019 1:02 AM.
1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY Gallery
Video of the 261 running

1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration