Original '73 sideplates on a Miroku '73

[Slo' Poke Pete]

Mornin' fellers.  I've got a Miroku '73 that I'd like to find another set of sideplates for to have engraved and put on the gun for my grandson's birthday, sometime in the future...he's only 3 y/o.  Will original '73 sideplates fit on the Miroku guns or will I have to try and order a set from Miroku?

Thanks.