I read somewhere today that a Grand Vitara steel front diff wont accept an ARB Locker.. I am in the process of fitting mine from a FAILED alloy diff into the GV steel carrier. I have made heaps of measurements and I cant see why its not going to work.. Have I missed something obvious here ??

I specifically ordered the Grand Vitara front steel diff, by Suzuki part number, to carry my front ARB.  Works like a champ.  I have it stuffed into an Anvil.