I have a y1 tranny and the fifth gear isn’t working. I have a JDM S1 with a chewed up ring gear and Countershaft. The gears are still good on the JDM S1. Can I use the s1, 1st gear and Ls 5th and put them in my Y1??? I need some answers quick please. I believe i can use 90-91 tranny parts. Colin states there is a difference between 90-91 and 92+. If anyone has some answers please share them. Thanks in advance.