what is involved with installing a super charger on a 2002 p71?
The supercharger and intercooler themselves, and a more free flowing exhaust. The engine will have to be lower miles to handle the xtra HP too. Check out some articles online or videos on Youtube. It has been done and there is even a company that sells a new bolt on Suercharger system for $6400. Expect to have around $10K with other upgrades and parts and tuning and labor if you are not doing the work all yourself.
After you blow up the engine you can sell the used supercharger for $1,000.