Thanks sparkwizard for your help!

Where is this mini bike parts guru with Aspera parts?

Honestly, and this is only my personal opinion...unless someone is trying to restore a perfect Broncco, the Italian engines were scrapped many moons ago and Tecumseh engines were installed. I have only seen one of those bikes here in North Carolina, and it had an Italian blower shroud on a 3.5 Tecumseh engine.
Good luck