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hmmm...I wonder if a K03 return line will work on a K24 or T3 on an AAZ? anyone?
K03 has a pretty tiny outlet flange. its worth a shot, but i think the only way it would work is with adapters of some sort.
you could build a 16mm spacer for the T3 line and run it?
i believe the only reason that the return lines dont fit is the block height, so if you made a 16mm spacer, and used longer bolts and a gasket on each side of the spacer, then i dont see you having any issues..