Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
There is a few available
Raptor Superchargers
CAPA Performance
There is more but that should get you started
Failing to see how these are turbo's....
The OP asked about bolt on blowers too.
You have to question a turbo kit sold by a mob that don't know its applications. Anyone in this game should know that the VZ isn't an Emo, IMO that's a nOOb blunder.
OP you're going to have a hard time finding a second hand hairdryer or blower for an Alloytec. Your best bet for bolt on (assuming you want to do it yourself) is the Raptor or CAPA blower kit. It's going to cost you $5k minimum (Raptor) new though. AFAIK there's limited hairdryer kits available for the Alloytec.
Or even if there are any super chargers that are bolt on
Failing to see how these are turbo's....