The Holley 2245 has a 2-ring booster. This large-bore BBD has 1.562" throttle bores, & 1.314" venturis, with a single/traditional booster. And a metering rod/jet arrangement.
Diff pic of same carb I posted in the "other" MI thread, just rebuilt for My Buddy's survivor '71 Satellite Sebring-plus 383.
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