Again, what are you trying to achieve here, or what do you need ?

The turbo will not be unique, even if the turbine housing is bespoke.

eg, a quick google for fiesta rs turbo hybrid brings up this, which is undoubtedly just a generic core replacement.

https://www.turborebuild.co.uk/enhan...tridge-stage-1

or this ( same seller )

https://www.ebay.co.uk/itm/322378593255

or this

https://www.burtonpower.com/hybrid-t...urbotsf13.html

There will always be options.

Or just adapt a T3 or T25 flange to your manifold which should be pretty easy