Thanks Scoti...I dont fool much with trailing arms and havnt seen those brackets...those are nice..
Justin...dont quote me here and Scoti maybe can clear the air..
I watched the Spicer video about 3 times..if I understand what hes saying, when he says diff down, hes talking about the angle from front to rear as viewed from the side..,the centerline of the pinion shaft,, so on their calc you would want 4deg down, which means the diff nose needs to be up 4.2degs..
At 2:40 he talks about angle up and down being viewed from the side...
https://m.youtube.com/watch?v=TUFzehQBDPI
So when I say pinion up I'm referring to the nose of the pinion pointing up, which in turn is the way Spicer describes it as being down...some confusion there for sure..