knukoncepts, I just had a thought on this that should be taken into consideration. With the beefcaked drive shaft did your machinest leave enough play in the fit to allow for expansion/contraction of the metals used in the assembly. I wonder because as the underhood temp rises things are going to slightly change, without an allowable play tolerance I would assume that the shft or s/c could seize. does his sound right or is this point void?