I'm currently tweaking last 10% of my FIAT Cinquecento conversion (as we all know this step takes >90% of total work time) and around 98th percent there's scheduled upgrade to EPS from younger Seicento.
We (Poland) still have quite liberal regulations regarding technical approval but after joining EU there's drift in the same direction, maybe not as strict as in Germany, OZ or NZ but definitely not into liberal side like in US. Ahh, "the more freedom, the more control" - heard it yesterday in punkrock song in radio
Good luck with your build, euro Corsa B was on my list of potential gliders for first conversion, too