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I dont. I just reused the factory 2bbl manifold bolts. I do have ARP replacements in my toolbox with washers. I could swap each one out one by one.

I currently have a 383 (stock cam and compression) with an Offy intake and Holley 1850. Intake is sealed well with Felpro valley pan and RTV on both sides of the gasket around the ports. The carb studs had to be 3/8" dia, as that is what the intake required, so I drilled the carb bolt holes to...