Spark have done the Breeze Alfa -
http://www.model-car.com/miniature_detail.asp?nr=SO469 - as well as Giovanardi 2004 ETCC car and a few 2002 ETCC BMWs'
BBR models -
www.bbrmodels.it - also do a very nice line of 1/43rd models including ETCC Alfas, Italian and STW-Cup BMWs and Audi. There's also a Winkelhock BTCC BMW 320.