Some Brembo cast iron brake rotors may still be available. The Ducati Performance catalog lists rotors for the 1995 900SSSP that came with cast iron rotors. People that ordered them got Brembo cast iron rotors. The packaging says its for the 900SSSP and 916 Senna.
This may be a good time to look at reducing the rotor weight to improve handling.
Stock 916 (Round holes) ... 4 lb 3.5 oz
996 (Snowflake) ........
... 3 lb 11.0 oz
998R Narrow Track ....
... 3 lb 1.0 oz
BrakeTech Ductile ...
...... 2 lb 15.0 oz
AXIS Rotors .........
.... 3 lb ± 2 oz
Galfer Wave .......
........ 2 lb 7.0 oz
The lightweight AXIS Full Floating Ductile Iron Rotors from MotoWheels look tasty
[Edited on 5-16-2003 by Shazaam!]