Effective December 1, 2023 Holley has canceled the basic Sniper-1
and replaced them with their Sniper-2 equivalents.
The 550-510-3XX replaces the 550-510
The 550-511-3XX replaces the 550-511
This does not apply to the remainder of the Sniper 1 product line.

(The cancellation also applies to the 510K and 511K variants, although we do not recommend the "K" systems
because of the inline fuel pump and the low quality filters.
Contact us for suggested upgrades)