i got my driveshaft in today and i went to put it in the tranny and its not going in. i know it is a R-154 driveshaft because it is shorter than my W-58 driveshaft. and i know its an R-154 tranny. there are no serious nicks or gashes where you put the driveshaft and the tranny together. just got a couple questions. are there year seperations like the pre 89 and the 89+ for the driveshaft?? im lost on this, thanks in advance for your help.