Piaggio typhoon 125 non rolling nut big drum

Hi all I've got engine stated in title but from what I've read on here non rolling nut is small drum an rolling nut big drum.
But mine non rolling nut big drum?

 

Could be a sr aprilia engine?

 

Ok would that use same loom as typhoon as the loom I got with engine the typhoon clocks and switches plug straight up?