have Kuryakyn 4357 footboard.

[Freighttraintorquemonster]

have Kuryakyn 4357 footboard.Trying to fit into the rear passenger footboard. But I already have an existing extension adapter. It's called PE7 passenger footpeg extension. Does any one know how to fit the 4357 footboard into this extension adapter into the PE7 passenger foot?

 

[TURBO200R4]

welcome from arizona