1995 Campagnolo Mirage - will new one fit?

Hi All:

My 1995 Bianchi Eros just lost its rear derailleur. (It committed suicide by
jumping into the spokes and needs to be replaced.)

The derailleur is a 1995-vintage Campy Mirage and the bike has an 8 speed
cassette. Will a modern-day (i.e., 9 or 10 speed) version of the Mirage fit?

Also, does anyone have a suggestion as to where to obtain replacement parts
with reasonable shipping times?

Thanks.

- Dave