Re: 3.45 LSD conversion for EA
Isn't it the upper trailing arms? They need a scallup out of the bottom so they don't hit the diff, but having said that, the diff shoul dhave the original mounting holes and XR mounting holes 25mm below that. Mine does, but I can't fit the upper control arms in the holes because the bottom edge of the upper control arm interferes with the top of the diff housing.
Either put the EA arms in the standard holes, or get some XR upper control arms so you cam lower your roll centre by 25mm.