The hardware seems to be bolt on to a degree (devil as always is in the detail).
This will get you started :thumbup:
http://www.j-body.org/forums/read.php?f=40&i=123136&t=123136
Tonns of info out there if you know where to look, the americans call the Z22SE an ecotec and the designation for the 2.2 is a L61 iirc.
As prev post mentioned its the management thats the issue.
Z22SE uses a Declo/dephi GMPT-E15. Cant find much info on on flashing/remapping or Tunning (as our american cousins call it) for this ECM/ECU. Saying that it must be possible to do as the Hahn Kit and Dbilas kit would need to sort out fueling and I have seen a hand held flasher for sale that supports it but no details on how it works or how you can get maps etc.
GM also had a map for the supercharger which would go some way to allowing the ECU to see the extra intake psi and provide the right amount of fuel.
Perhapse someone can shed some light on how courtney / regal overcome the management issues. flash/piggyback/standalone?