I've never done this on a 230 but I think you want to use your stock 63 bearing and presure plate with the s-10 disc. You just need to match sizes and spline on your disc, think the s-10 is around or a little less than 10", might me metric. I would also check to make sure you have enough splines on the input shaft for the disc to disengage from the flywheel. Carefull measuring or better yet a fit check withough the presure plate installed. One the 235 you have to cut back the front bearing retainer and trim the input shaft pilot, but don't know if this is the case on a 230.
