Why not turbo the zetec s engine
Use good parts and you should see good results

In time I will be turbocharging one off these for my light weight Sierra
( just slowly collecting bit up )

Also I had to resently cross check a zetec s dry sump pan on a 1.6 Eco boost engine
And the block look very identical
So you maybe able to get the Eco boost rods and Pistons to fit maybe ??
And the zetec s engine is so light over a black top