Stupid insignificant wires that prevent the entire thing working. Next time I do one of these things I'll remember you little black wire, I'll remember you...
Rather than hijack Trds thread I'll link to my post talking about it on AE86DC;
http://www.ae86drivingclub.com.au/forums/showthread.php/26285-quot-WARNING-quot-ARP-Head-Studs?p=826857&viewfull=1#post826857
So glad I saw this thread. Was about to put my high comp high power engine together with ARP studs. Would have cried if it blew up.
I've confirmed this issue with pictures if anyone is interested.
If you're going to replace the entire thing at least get a t-series diff (from a T-18) or even better, one with disc brakes off a Jap-spec AE86.
That way you get larger axles and option for a LSD...