no idea on that one, but i'm going to guess you should get a whole rebuild kit, as you will have the tranny open to get to the syncros...
we changed the clutch in my dad's f-150's t-5, i didn't do a whole lot of it, it was mainly him, and a family friend, that was about 6+ years ago, and to this day (actually talked about it with my dad about a week ago on the phone) swears he will never do another one again, without a shop and a hoist... they just put the truck up on a set of steel ramps, so there was like 2 feet under the truck in which to work... not much room IMO...
i would buy a set of 15 ton jack stands (4 of them) to do this, and lift the truck up as high on all 4 of them as you feel comfortable doing...
(15 ton are bigger and wider than your normal car ones, the width will give you more stability, and the height, well gives you more height...)
if i remember tomorrow, i'll take a couple pics of the stands i've got to show the difference in size