Flat Cast Iron footboard extention Mounting?

[49panhead]

Can someone tell me how to install the flat cast iron footboard extenions as they would have been put on from the factory.
Did they have the long side to the outside or the to the inside of the motorcycle?

[marsh1915hd]

Long side to the outside.

[49panhead]

Thanks!
That's what I thought, but I have seen bike's with them both ways.