I'm in the process of installing a front locker in my 98 Amigo. I picked up a new 3rd member and housing from a 99 trooper. Everything works right except the pinion flange. The Trooper was (I'm guessing) a TOD model and had some sort of weird cup looking flange on it. I of course need the regular 10 bolt flange. I mistakenly thought I could swap the flanges and discoverd the 98 flange had a whole bunch of extra splines in it <img src="/forums/images/graemlins/rolleyes.gif" alt="" />

From searching it looks like the standard 10bolt flange (from almost all years of Isuzus) is the 13 spline (like my 99 trooper diff).

Do all of the 13 spline flanges have the correct bolt pattern for the drive shaft?

-Mike