For the base Vibe. I googled "Vibe Supercharger" and I found it odd that no one was selling them. Do they even make them anymore?(And if they do how much is it to buy one?)
You can get more HP by using a piggyback ecu like Unichip or e-Manage allong with an aftermarket intake and exhaust for better air flow. Add a Water/Methanol Injection System for safe running to keep temps down and you could potentially see a 75-100 hp increase. This is only for a 2003 or 2004 Vibe.
My Fleet:
'15 Ford Fusion AWD Titanium 2.0 Tutbo
'14 Lincoln MXZ AWD 2.0 Turbo
'14 Nissan Pathfinder AWD SL
'05 Pontiac Vibe AWD