no thats what i had on my 20r. but it had cam and a 22r exhaust manifold, so it wasn't really stock. those are air jets and how rich your carb runs also depends on the size of your main jets and idle jets. main jets are in the bottom of the float bowl and the idle jets are on the side of the carburetor.  my carb is slightly under jetted right now. i got more on the top with the bigger jets. right now I'm side tracked on some other mod I'm doing on my truck, plus i drive it every day.