Rear housing ended up just being too narrow. Sent back for a new unit to be built 10" wider. Been waiting since Sept and hoping everyday for the phone call. As unfortunate as it is, I took the opportunity to upgrade the orginal to Strange's strongest unit.
Ultra case.
40 spline gun drilled light weight axles.
Upgraded the 1350 yoke that came with the unit to a chromoly 1480 series. And was able to source a Reid Racing 4L80 1480 chromoly slip yoke made for them by MW.