It depends on what YF you have. These were used on engines from 134 to 300 cubic inches; and thus all YF's are not the same size. If the one you has is one designed for your engine (or a very similiar unit), should work well for you.

I believe board ethics prevent me from answering your second question.

Jon.


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop