The AWD tranny is not uncommon on a JDM engine. But I have never heard of the Axle support not bolting up to the block. I have done and been involved in 8 or so swaps and have never seen this problem. Usually you just take you old mounting bracket off of your old engine and mount it to the new engine and call it a day. Does, you stock bracket even come close to mounting up, as in 1 or two bolts will line up. If most of the bolts will lineup, you may want to look at the possibility of tapping the block.