Please help Carb vs carb

[Dandrax]

I recently bought these two carbs and i noticed one was slightly different and the oko looks like it was smoothed off that one is from bikeberry. The other ones from motorized-bicycles just an fyi. Anyways which ones better does it make a difference?

another question on the reed ensemble theres a spigot screwed in it is that intended for a boost bottle? Dont have picture tho

 

[Dandrax]

Bump

 

[Agreen]

I couldn't tell you the difference between the two. China has gotten pretty good with replicas in the past few years. It looks like a PZ16 derivative, which I believe is a Keihn rip-off anyway.

And yes, the port on the reed box is for a 'boost bottle'. Don't waste your time or money. Use a vacuum cap.