Glad you found some parts but from what I know the trans is still the weak link, in fact far weaker than that clutch rating. You really need to talk to a trans builder about the '94 trans you have to see if it is suitable for you use without modification.
EDIT
Just saw that you are double posting this question.
http://67-72chevytrucks.com/vboard/s...d.php?t=567931
Shopping for an answer you want to hear is not in your best interest. Ask a shop that specializes in these transmissions and get an answer on how suitable your current trans is. Having something is a poor reason to install a trans that will likely be troublesome more so if you have to spend a lot to make it work. Having a truck called money pit is one thing but poor uninformed decisions make it one.