I have read you need to cut up to 3/8" off this input shaft on this transmission to get it to work with the y block bellhousing but besides that it should bolt right together?
What bearing, clutch pressure plate do I use with this? I have all the stuff from the yblock and it is virtually brand new.
The reason you cut off the input shaft is because it bottoms out in the pilot bearing on the Y-Block crank. Check before cutting.
I would use your original pressure plate and throw out bearing. Use a clutch disc that matches the spline on the new trans and the correct diameter for your pressure plate.
Is see you have duel bolt pattern on the trans so it should bolt up. Check the diameter of the front bearing housing to ensure it fits the hole in the bell.
Check trans length for drive shaft modification if needed.
There is another easier option. Use a model 303 Ford toploader all synchro 3 speed transmission. They were available in the 63 and 64 F100/F250. I have info here somewhere on the Jeep floor shift that replaces the original 303 top plate. Takes a little work because the side trunions need to be removed. The Jeep shifter would be centered. Since the 303s were column shift a floor shifter adapter is needed if the Jeep conversion isnt made, and it ends up left of center in the floor.