Lugnutz,
Thanks for your time and drawings. Not sure what I was reading when I measured but when I returned to the barn this morning to re-measure I realized that I read my tape wrong. Turns out that "A" was only 1/4" larger than "B", so I only need to shorten my throw out bearing retainer collar by about 1/2" and possibly ream the clutch disc splines a bit to create the space it needs to slide freely. I don't think I will need to shorten the tip of the input shaft since it only measures 1/8'' longer that the depth of the bushing bore and the thin spacer should move it out that far, but I still can shorten it if needed.
Stopped in at FLAPS Friday and picked up a complete clutch pack for an S-10 for $100, thinking I got a great deal. Turns out the pressure plate is too small, throw out bearing may not be compatible and not sure how to extract the pilot bushing to see if the one in the kit will fit. So, maybe not a bargain after all. I am sure they are tired of me buying parts only to return them a few days later. Asked them if they sold the friction disc first and they said no, only the complete kit. Looks like all I will be able to use is the friction disc, which hardly seems worth $100.
Does the original clutch lever have a retainer to hold the TO bearing? I don't find one in my salvage parts. If it had one I think the machine shop may have lost it.
Thanks for your input.