@bennythe1 ,Ben, your local library probably has the repair manual for your 1991 Toyota pickup which would be nice to have on hand, or try using the links below to see how transmission removed for clutch change to see what you are in for. The 3rd link says it is a downloadable zip file for your repair manual(I did not try, try at your own discretion),Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
https://www.youtube.com/watch?v=B9JU931GUcY
https://www.youtube.com/watch?v=h1YGdJ9odLo
http://www.mediafire.com/file/ijmmmjzf02d/1994+Toyota+Repair+Manual.rar