I suggest using the Saab 2.3 Turbo red top injectors.
I recently upgraded to Volvo T5 injectors on my supercharged E280. However you will need even higher flowing injectors on a 4 cylinder and the Saab one's are readily available from breakers yards and flow plenty.

Bigger injectors made the biggest power difference on my supercharger project.
However warm starting is a problem and you will need an adjustable fuelling computer to adjust it all. I use the Apexi S-afc controller.