Technical boost engine 1.6

[dudi]

hi
i have engine from fiat tempra 1.6 1993 ,
and today i will get fiat punto gt with broken engine .
the punto have td04 turbo, fueltech ft300 ecm . siemens 630 injectors, intercooler .
can it possible to boost the stock 1.6 engine with little modification like replace head gasket ?
how much psi i can boost on stock rods\piston ?
how much hp the engine will make ?

thanks