Let them all fall out! those needle bearings aren't very small actually and the kit will come with all new ones anyway don't worry about that he'll put a little sticky grease on there and put the new ones in no problem it was so easy.
Yep, the input to output shaft has some big ol needle bearings, as does the counter shaft on each end but a little smaller (some transmissions have two sets on each end of the counter gear) and it is a little freaky when you see them all pour out into the bottom of the case for the first time. :D
Nothin to it like Jpar say's, just grease and stack the new ones back in.
It's as easy as putting the needles back in a U joint cap, and that's pretty easy.
Of course you want to check those bearing surfaces for pits or wear while those needle are out.
