Hi
I would also say check it! Also I found a load of sludge inside the lower metal casing when I removed mine, well worth removing that and giving a good clean out.
I would suspect that the later engine pump is the same as the change on height for the 2.0 was due to block height, not sump area related, but you would need to double check. I see the odd one available on Ebay.it which is OE according to the listing.
Peter
the sumps on smaller engines are different, i think (not 100%) you can fit a 2 litre pump BUT you would need a 2 litre sump. if i remember right the 2000 pump has more pickup capacity and the VX one is deeper still