half shaft is loose it wouldnt rattle at high speed but it will vibrate as the loosness allows the shaft to go off center to one side and stay there.

the shake might not be too bad... at first.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.