Oh man! sorry to hear about the hydraulic oil bath!
OK so one more thing, some trucks had a removable input shaft on the transmission.
Look on the front of the differential housing. There are two metal cup type plugs.
One is facing the front of the truck and is above the other one. Take the one on top off and look into the differential housing. You should see the end of a shaft. This is the input shaft. It has a threaded hole in it and a snap ring that holds it in. you can take the snap ring off and pull the shaft out just enough to clear the clutch. DO NOT PULL THE SHAFT ALL THE WAY OUT. JUST ENOUGH TO GET THE SHAFT CLEAR of the clutch and pressure plate.
Put a bolt in the threaded hole before you take the snap ring off so you don't drop the snap ring into the diff housing. the threads in the shaft are 3/8-16 I believe.
Good luck.
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