Supercharging a 3.8l?

[LilRoush]

As long as it's taken care of, it's ok. Change the oil in the snout and make sure the rotors aren't all torn up on the inside (just flip it over and spin the pulley... they should look clean without nicks/dings on them).

 

[MustangChris]

if you get an unported, unpullied, you can get them for 350ish on svtp.
a pullied unit that has an outdated port design can go for $100.00