I heard Gl-5 does not go good with the Syncro Rings. I get 85-90 GL4 and 80-90 GL5 mixed up all the time. I think 80-90 GL5 is for the rear diff. Had to edit my previos post.

[img]http://www.imgur.com/hxlGUJt.gif[/img]
4-speed
3:54 Dana
13.01 @107.93 with street tires (not hooking up)