Really? A buddy of mine has one is his Chevelle with no problems so far, but it's only about 2 years old. Do the valve bores wear or something? I wouldn't have gone aluminum anyway because that small weight difference simply isn't worth the money to me......but the info might be useful to my friend. I still have a few other things I'd like to try to improve the RT of my Vette, but if they don't help I'll be buying a new brake. My pro brake is a 14 year old, 2000+ lap TCI unit. Thanks guys,
Johnny