I am sure you will be much more pleased with them. Definate improvement over the 305's!
Since my upgrade, i've had them on the track 3 times. No sign of fading, Very easy to dose, and even though the the stock pads are not the most agressive, they seem to take the punishment really well.!
Going to the track tomorrow, and after that, i expect the pads to be worn down. But by then they will have lasted 4 trackdays and about 6000 km. Not bad really.
BTW the 330 calipers weight about 30% more then the 305's. The disks too. So all in all i think you add a good 4 kg pr wheel of unsprung weight
Check the link below for data.
http://www.alfaowner.com/Forum/showt...920#post536920