Dude dont drive it. The fluid will leak out faster than you can keep it full.You will kill the pump fast.
I just did this two weeks ago on my 94. The seal kit was less than $10. Took me about 3hrs start to finish.
After you get the pitman arm off make sure you remove the top cover and pull the shaft out before you try to get the clip and seal out.Keep track of how all the seals come out so you dont get the new ones in wrong.