supercharger modification needed?

The supercharger on my 95 Riviera 3.8l has crapped out on me. I have bought a used one online, but it is off of a Bonneville 3.8l.
Does anyone know if it'll take modification to install? And if so is there a kit I can use? Where would I find one?
I would greatly appreciate any help or advice anyone can give.
Thanks, folks.
Mike

should fit fine. this is the 3800 series engine? they're all the same, shouldn't be a problem.