engine and modifications

Hey guys, Having issues with my minibike. Bought it, a Murray Track2, with an already installed 6.5hp Tecumseh engine. I was adjusting the carburetor on it one day and ended up breaking the float bowl. I then replaced the carburetor with a 6.5hp lawnmower carb, replaced the air filter, and...

I took my bike to the shop and they said I need a new carburetor and I remember seeing my friend with a dirt bike carburetor on his engine but don't know what kinds of engine he has. So what kind can fit on a Honda 5.5 clone?

I have 1970 Rupp Roadster without a carb I was wondering if anyone knows where I can get one