The R32 HGP-Turbo is really powerful! Stage 1 with about 360 PS makes the run from 0-100 in under 5 seconds. But unfortunately HGP is too expensive. I don`t know if the money hurts you
but I can give you an adress in Germany / Hamburg where you can order a (in my opinion) better, cheaper and easier to install Turbokit. This Turbokit will bring your R32 up to 380 PS (Stage 1). Or you order directly Stage 2 with 450 PS.
If you need more information please contact me via "private Nachrichten"