help on sprung csb chassis with cosmetic outside frames

[Le Corbusier]

Still chipping away at the outside frame Kirtley after a summer away from modelling and re-enthused after scale forum. I am trying to figure a way of making the bottom straps below the axle boxes convincing yet removable. They will close across the bottom of the white metal frames. does anyone have a clever ruse? they will be purely cosmetic.

Solder a copper wire 'staple' onto the back of the keeper plates. The staples can then be put into two holes in the frames and bent over to hold the keeper in place.

Thanks Bill .... I will give it a go