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  1. twister360

    Anyone have Holly EFI on 360 Magnum? Issues?

    I’ve been thinking of installing the Holly Sniper on my 74 Duster which has a mild build 360 Magnum with built 904 transmission. Currently have Holly 3310, electric choke, also have AC. If I buy the kit will I need anything else, like return springs, kick down linkage, etc?
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