Looking around for something else, I found this (
https://www.ebay.co.uk/itm/296617174673). The gear ratios are listed in the ad. It is supposed to have come from a turbo Fuego so if the gear ratios are tolerable, it should be a good tranny for a Europa (after the mounting linkage issues are resolved).
I don't know the guy, I get nothing for this, your mileage may vary, yada yada...