So my diff builder got back to me - Ordered a reconditioned 3.46 LSD, picking it up tonight after work.
Raptor has been organised also, I will send up my ECU on Monday, he will get it re-flashed and send it back down with injectors. I've been advised by him the car will run fine with the new tune without the charger so when it rocks up I can just install it (which is 2-3 weeks away).
I'm currently awaiting reply from Greg at ASR so i can ship up all my cluster/switches to him for recolouring, morphing needles and speedo correction.
All happening at once haha!
EDIT: Also won a set of VT SS rim's for $150 with good tread haha.. They're not the best wheel but they'll look heaps better than the shitty things I have on right now.