Cut-A-Way buick nailhead and dynaflow transmission?

[Sean]

I have a complete cutaway chromed/enameled/polished/ rotating Buick nailhead and dynaflow transmission... I have been able to find ZERO mention or history of... it has a chrome factory breather with "wildcat 445" on it... so it has to be at least a 1959? it's the same as what is in my 1959 electra 225 convt... I've searched the GM motorama articals... I found one mention of a nailhead cut-a-way at the 1959 event but no pictures... anyone know the history on this? thanks