Don't know.
MOST of the original Holley 1904's were S.A.E. size 3. The 216 requires a size 2. Since these guys are advertising this to fit, possibly. If it needs different jets, pumps, etc., where do you get calibration parts?
(Opinion) even an original 1904 on its best day was never up to the 483s or 574s Carter W-1's.
Jon.
