Great pics and great work, cerveza!
That engine looks nicely-fitted to that engine bay - and I think I see a clutch slave cylinder on the gearbox, so I presume you've used the Croma gearbox (the one with the oil-level dipstick on the differential casing?)
Could you perhaps also tell us please which wheel hubs and CV joints you've used (do Uno Turbo hubs suit the Croma driveshafts?)
It's just that we tend to get people asking questions about fitting a twin-cam engine to the Uno - e.g. the current thread
https://www.fiatforum.com/uno/164991-1-6-uno.html?p=1766525
Thanks!
-Alex