Keule,
did Fiat produce 1.6L turbo engine? I Know they made 1.3 and 1.4 versions in the Uno and Punto,but no 1.6L turbo.
However,the 1.5-1.6 engines respond well to turbocharging. As far as i know the X 1.5 engine will not accept these 1.9 kits,as there is some difference between the castings. My mate did a 1.9 turbo conversion in a Punto,not sure wich casting he used,but it needed some machining.
Althrough, the stock bore for 1.5-1.6 is 86,4mm,so for 87mm pistons you need to bore.
Althrough,great price for the kit,just get a 1.6 engine casting and then you are ready to go!