Flange
It depends on what you have now. If your driveline bolted directly to the crank, the flange won't help you. If your old set up bolted to a flange, (doubtful), then the Chevy drive flange will solve your problem...... The type that bolts to 4 of the 6 flywheel bolts do not have 4 symmetrical holes to bolt to the drive flange. It depends on what you had before......Ray
PS What ever you wind up using, make sure the spline doesn't bottom out on the shaft. It WILL wipe out the thrust bearing in the motor..........