I think the sump is a fibre reinforced aluminium and it cannot be cut and shut, so I think your only option is to get a US one. Of course I could be wrong!!! Have a look .
I know HSV has had no trouble with his ZF , but a 4HP22 has a maximum torque rating just above a 3.9. and the 4HP24 is just above a 4.6.
You can put a 4HP24 oil pump and clutches into a 4HP22 . It makes the trannie about 1/2 inch longer. BUT the torque capacity is still about 50-100 Ft lbs short of a Gen111.
Thus my talk about the killer ZF rebuild. And a Turbo 700 (or 4LO 40 or whatever the computer controlled one is called) V8 version has a torque rating above the output of a gen111 (obviously).
regards Philip A


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