i am getting ready to put a 355 742 sure grip in my 63 Plymouth sport fury. Its going in a 65 B body rear end. As of right now the rear end that's in it now is an open rear 741. I used the green bearings to rebuild the axle ends. My question is------ Do I remove the spacers,(if it has any) from the 355 before I install the 355 into the housing? Thanks, Tom.