Hope you don't mind me asking this in your build thread, but where did you pickup your Suretrac R160 and did it really come with the Spec.b aluminum dif member?
Looks like you have installed Whiteline KDT903 rear dif inserts. Why not do the Whiteline KDT906 rear dif mount bushings since it's all out? (Pressing out the old and pressing in the new??)
Now you need to install the front dif for the 5MT! I had that put in last year before winter. I'll tell you, one of my most favorite mods. Completely transformed the car. Regular driving, feels just like stock. Pushing it hard in the corners, thing feels like a true AWD car. It just pulls the front out of the corners and snaps everything back into alignment. It feels like it takes away all understeer and oversteer, truely amazing. And I still am on my OEM suspension!