Hmm, 2000 323i. No, I don't think I have you a supercharger,
but, here, you could check this site out. (I've no idea where
you're located, so I apologize if this is like, on the other side)
They're like, 3k+, so, that's alot of cash outta your pockets.
Here's the link. Sorry I couldn't be of any more assistance. http://www.modacar.com/products/BMW/3Series/MODAFOIN