A lot of people drag race with them. The highest HP off the top of my head...Kyle SGP from what I know ran many 10's with a 1 pc aluminum. I did power breaks with one wet and dry many times and made many passes down the track. I had over 420 dynoed torque and was nothing compared to some others out there. Why Chris has had these problems is a good question, but I wouldn't label the aluminum driveshaft as bad considering the hundreds of others and no other known case of a Z32 breaking one. You'll see people jumping on a bandwagon now since 1 person has had a problem with them breaking I'm sure though.