Is it possible to use the turbo of a diesel car and put it onto a petrol car
in theory.... yes....
it will run low boost around 7psi or there abouts and u'll need to mod the manifold to fit it if the manifold studs (and they probly are) dont match up.
for higher boost just change the actuator, cos the diesel blowers are small (in comparison to petrol engines) will give good hp at low levels but wont give loads up the top end of the rev range.
Nova TD turbo runs standard boost between 9 and 10 psi.