has anyone use this part before? Its a crank hub for a stock crank SBC that uses a BBC seal and has the 6 bolt flange for a blower pulley. I'm trying to get dimensions of it...overall length and distance from pulley mounting surface to either end. The plan is to machine out the center bore and re-broach it to fit on my flatcad crank after it has been double keyed. I just want to make sure I can make it work with the offset it has.