Join Date: Feb 2001
Location: east corinth vt
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Re: Do YJ\'s and XJ\'s use the same NP231??
i took an earlier xj(84) ax5 and np207 case and put them in my 2.5 yj. i was able to use my shaft from the yj, and it was the same spline count. the xj i used for parts, however, had the 2.5 in it. i think the np231 behind the 4banger had 21 spline, and the 6banger 231 case had the 23 spline.. anyone else know for sure...