Yea, our cars are based on the 320 - but the 320 is a HARD TOP convertible and it is configured quite differently.

I am unsure that the exact same pump would actually fit but I can't say for sure. Ever watch the '320's top do down? The sequence is very different from ours.
Now, this does NOT mean that the electronics don't turn different valves on and off at different times - so maybe it IS the same pump/valve unit, just sequenced differently by the Top Control Module. I just don't know.

"TopHydralics" is a guy who shows up here a LOT, he knows the system better than anyone. I'm sure he will show up in a day or two and can speak to this question better than I can.

Until he shows up, just put the top up and down manually!