Hi Ben, Brian.
Thanks for taking my request so seriously.
I had found Fiat ePer at
www.spangerum.com. But the information I had regarding the suitability of the oil pump has been by word of mouth - apparently different gearing, increasing capacity to levels of the Abarth ones.
The car's been off the road most of this year, so I suspect your pc will be back before I need to decide, though would like to have it running again by Christmas.
Matt.