hi, friend.
I did a Turbo project with a Corsa for some time.
A turbo spa was installed, I do not remember the exact rapter but it was small, the engine was a 1.4 8 vlavula, Radiators and running them to the front of the Calandria, the intercooler was supported by the soul of the bumper, the engine did not disarm, worked with the original compression, the injection was handled with a Haltech Sprint 500, initile Complete, hks relief vlavula, the Wastegate was integrated with the turbo, Conico K&N filter, finally had 380cc 380cc injectors.
The car threw 142Whp (power to the wheel) in a dynamometro Dynapack, if you want more data on the assembly to contact me privately and solve doubts.