A rule clarification/ rule change has been added to the inboard rule book.
Rule 55.3.10.1.1 now reads: Carburetor is to be a Holley manufactured # 4776 (all series). The center section/main body must remain stock and as furnished by Holley. The choke mechanism and related components may be removed. The air horn can be milled off. No HP center section/main body allowed. Only the following dimensions are to be inspected/measured : Primary/Secondaryventuri @ 1.265/1.3275 maximum. Throttle plate bore @ 1.5675 maximum .All other modifications permitted.
The full Inboard Rule Book can be found by clicking HERE