Though
FCP1052 also lists your car:
156.40 x 54.30 x 18.50 mm
Compounds Available: DS2500,DS3000
ALFA ROMEO
Alfa 145 2.0 2.0 Twin Spark 16V 1996->02/99
Alfa 146 2.0 2.0 Twin Spark 16V 1996->02/99
Alfa 147 1.9 1.9 JTD 10/00->
Alfa 147 2.0 2.0 16V 10/00->
Alfa 155 2.5 2.5 TD 01/95->12/97
Alfa 155 2.0 2.0 Q4 (Turbo) 16V 1995->03/96
Alfa 155 2.0 2.0 Twin Spark 16V 1995->12/97
Alfa 155 2.5 2.5 V6 1995->12/97
Alfa 156 1.9 1.9 JTD Saloon 05/01->
Alfa 156 1.9 1.9 JTD Sportwagon 05/01->
Alfa 156 1.9 1.9 JTD Saloon 10/00->04/01
Alfa 156 1.9 1.9 JTD Sportwagon 10/00->04/01
Alfa 156 1.9 1.9 JTD Saloon 16v 11/02->
Alfa 156 1.9 1.9 JTD Sportwagon 16v 11/02->
Alfa 156 2.0 2.0 Twin Spark Saloon 16V 1997->
Alfa 156 2.0 2.0 Twin Spark Sportwagon 16V 1997->
Alfa 156 2.4 2.4 JTD Saloon 1997->
Alfa 156 2.4 2.4 JTD Sportwagon 1997->
Alfa 156 2.5 2.5 V6 Saloon 24V 1997->
Alfa 156 2.5 2.5 V6 Sportwagon 24V 1997->
Alfa 156 2.0 2.0 i Twin Spark Saloon 16V 2002->
Alfa 156 2.0 2.0 i Twin Spark Sportwagon 16V 2002->
Alfa 156 2.4 2.4 JTD Saloon 2002->
Alfa 156 2.4 2.4 JTD Sportwagon 2002->
Alfa 156 2.5 2.5 i V6 Saloon 24V 2002->
Alfa 156 2.5 2.5 i V6 Sportwagon 24V 2002->
GT 1.8 1.8 TS 16V 11/03->
GT 1.9 1.9 JTD 16V 11/03->
GT 2.0 2.0 JTS 16V 11/03->
GT 1.9 1.9 JTD Multijet 2004->
GTV 2.0 2.0 (Turbo) 05/95->
GTV 2.0 2.0 16V 05/95->
Spider 2.0 2.0 i V6 Turbo 05/98->
Time to get out the ruler and check. If you get the DS2500 you will be impressed - that it what I recently fitted to mine.
Have you tried
Alfaholics ?