S5-42s and 47s interchange, get a powerstroke clutch. Had a broken ps s5-47 years ago and swapped for and idi s5-42 only difference is the first gear ratios.
I believe everything up until 96 is the 42. 96 and 97 have the 47. First and reverse gear are lower in the 47 making them more desirable. Buy a clutch for your year truck.