GRUBEE 66/ 80cc Motorized Bicycle Bike Motor Kit Engine

[Tahiti M Bicycle]

Hi Guys
What do you think in this 80 cc kit ?

GRUBEE 66/ 80cc Motorized Bicycle Bike Motor Kit Engine

GRUBEE 66/ 80cc Motorized Bicycle Bike Motor Kit Engine | eBay

So I'm waiting fo your advice on it please ?

Thanks