Metering Block #s on the 1968 Holley Carbs?

[JWH]

What are the correct numbers stamped in the metering block for these '68 GT350 Holleys?

S8MS-9510-C (4 speed)
S8MS-9510-A (Automatic)

Thanks in advance.
Jeff

[69mach351w]

5657/5659 on both.

[JWH]

Very helpful, thanks for the numbers.

[69mach351w]

JWH,

I sent you a personal message (PM). Check it out.
Rich