Bro it's not something like a magic or something... You can mount any carburettor on anything. Whether it's a car or a generator...
You can even mount a quad jet holley carburettor on a fx though it will not be able to handle such thing...
Now once I did, on chevy caprice, the carburettor wasn't available and someone swapped a 4a carburettor on it, car was running pathetic, had many issues... Since it was an auto caprice 1980.
Now the best possible solution I had was a hiace 2400cc carburettor, which was available new. I bought that, it had good plenty of wide air flow spaces, we got good throttle response out with it, and a economy of 12 was pulled out on a caprice automatic... Now that was something safe... If we suppose do fx carburettor on caprice it would be dangerously lean...
So this guy can swap in different carbs of same cc or almost same sizes to stop the car from getting too lean...
But these idiots don't have any sense, that what is afr, what is lean and rich...
So never get in to the teachings of such fools.. Who say zabardast sir, pick check kren seventyyy ka carburettor, karnama kia hai... Where this is not something new.
I have a kawasaki gto 110's carburettor with me it would be even better than 70cc lol.