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got the southbend kit G56 OK HD. I have a 2006 4X4 long bed 2500 6speed. As the pictures show, the flywheel will not mate up with the crankshaft. I cant get the flywheel to mate flush with the crank.
I just checked two take out SBC flywheels I have leftover from installing DD's on people's trucks. the inner flanges on both also measure 129.8, but they fit the trucks they came off of.
Do you perhaps maybe have a speedy sleeve on the crank?