Yes you can ditch the emissions crap you have circled.
It is missing the cooling shrouds that wrap around the cylinder.
Take a look at this one. Shows the fan and cover for the forced air cooling.
http://www.ebay.com/itm/Returned-GY6...d5450d&vxp=mtr
Lots of parts here.
They have the cooling shroud, fan, and cover that you will need.
http://www.scrappydogscooters.com/12...OKE_PARTS.html