Re: 2003 Crown Victoria... Supercharger or Turbo
AED makes a bolt on supercharger for Panther vehicles. I would only recommend their 6psi supercharger which is what most run on a stock bottom end. The 9psi one would require forged internals. Here's the link:
Angry Duck Tofu Racing
ADTR is a great website for all your perfomance needs on your Vic and the owner Chris is a great guy to do business with. He has an old school '92 Vic that's supercharged running 12s in the quarter mile. The guy knows his stuff on our vehicles. Good luck with your project.
'98 Crown Vic LX
-167k miles and counting. Still used as daily driver.
'99 Crown Vic Police Interceptor
-Completed full PI swap
-Marauder Airbox & 80mm MAF
-'04 CVPI Ziptube
-ADTR ported plenum
-Steeda Intake Spacer