As you are down on power anyway it is going to be woefully slower than a stage 3 sapphy, especially if the sapphy is 2wd.
Your car won't have a punch, but then it won't have any(real) lag either unlike a stage 3sapph.
A smaller turbo as yours works much sooner but runs out of puff much sooner as well, and is very limited in power potential.
For a serious power hike the turbo needs to be bigger, management(ecu) would need a serious look at too.
tabetha