Worse case is they're $100 at pick a part. Pop any one you get open and check the internals. The forks seem to wear on them. Also, be careful about the year. You need similar year auto for auto manual for manual as input shaft spline count differs. Up to 90 they were 21, 91 on 23 (HO motor). Just compare them when you have them out. I did the same swap 242-231.