which dss model, im guessing the 2.9's?

for a forced induction set up i'd go the 5.9's as a min with billet hubs, should give you a bit more safety, although adds a bit more weight, as with anything, still a chance of breaking something in racing!

I know dss did a while ago change their shaft line ups, due to snapping problems, so in effect like 5.9's became 2.9's for example.