Thank you. Yes,indeed,the stators are the same size. The charge rate depends the magnet size in the flywheel. Thanks again!The Stator will be interchangeable. However, the charging rate will depend on the flywheel used with it. The single cylinder Vanguard engines turned into being Inteks when the twin cylinder Vanguards came out which were mfg'd in Japan in my experience, same internal parts. Use this link to check the parts list using the model numbers of both engines. https://www.mymowerparts.com/pdf/Briggs-&-Stratton-Engine-Parts-Manuals-Parts-List/
Walt Conner