Im very impressed with the mopar 1904 carbs i bought, so far they are better, I pulled the 2 barrel off and I put a 1904 on to tune it and to my surprise it made my car haul ass, but then im running it without the vac advance and the pvc valve since the car has no vac ports, so ill see what happens when I do the same to the 2bbl, I never thought by doing that, it would add that much power