Lexus IS diff question
 

ok so i know the m85 diff is a dirrect bolt on with an lsd but it has 3.73 gears. after calling lkq they dont have one with an lsd but they have one thats non lds that they say is from a manual with the same 3.73 gears. did the M96 or any IS300 open diff come with 3.73 or just the 3.91. im not worried about not having an lsd i have on OSG im going to swap into it anyway.

I found some info for you here a little ways down:
http://my.is/forums/f87/official-oem...inside-380603/

"1. M96 sticker equals open Diff.
(auto or manual)

2. M98 sticker equals Locking diff. (LSD)
(auto 3.9)

3. M85 sticker equals Locking diff. (LSD)
(manual 3.7)"